Dressing up as idioms for Halloween or any costume event can be a fun and creative way to stand out. Here are 13 of the best idiom costume ideas for adults, complete with detailed descriptions and instructions on how to bring each idea to life.

1. Raining Cats and Dogs

Description:
This idiom means it's raining very heavily. For the costume, you'll need to create the illusion of cats and dogs falling from the sky.
Materials:
  • Umbrella
  • Blue poncho
  • Pictures or small plush toys of cats and dogs
  • String or clear fishing line
  • Tape or glue
Instructions:
  1. Attach the pictures or plush toys of cats and dogs to the strings.
  2. Tape or glue the strings to the underside of the umbrella so that the cats and dogs hang down.
  3. Wear the blue poncho and carry the umbrella to complete the look.

2. Smarty Pants

Description:
This idiom refers to someone who is very smart or knows a lot. The costume involves attaching Smarties candy to a pair of pants.
Materials:
  • Sweatpants or any comfortable pants
  • Packs of Smarties candy
  • Tape or glue
Instructions:
  1. Attach the packs of Smarties candy all over the pants using tape or glue.
  2. Optionally, wear a sign that says "Smarty Pants" for added clarity.

3. Tough Cookie

Description:
This idiom describes someone who is strong and resilient. The costume combines elements of a cookie and toughness.
Materials:
  • Cardboard
  • Brown felt
  • Boxing gloves
  • White face paint
Instructions:
  1. Cut a circle out of cardboard and cover it with brown felt to create a cookie.
  2. Attach the cookie to a headband.
  3. Wear the boxing gloves and draw a "milk mustache" with white face paint.
  4. Optionally, wear a shirt with a cookie print to enhance the look.

4. Party Pooper

Description:
This idiom refers to someone who spoils the fun. The costume involves combining party elements with a poop emoji.
Materials:
  • Party hat
  • Poop emoji cut-outs
  • Small balloons
  • Festooning
  • Headband
  • Hot glue gun
Instructions:
  1. Print and cut out poop emoji images.
  2. Glue the poop emojis to the party hat.
  3. Inflate small balloons and attach them to the headband along with festooning.
  4. Wear the headband and party hat, and look disinterested to complete the costume.

5. Head in the Clouds

Description:
This idiom means someone is daydreaming or not paying attention. The costume involves creating clouds around your head.
Materials:
  • Polyester fiberfill
  • Wire
  • Headband
Instructions:
  1. Break up the fiberfill into cloud-like shapes.
  2. Attach the fiberfill to the wire and wrap the wire around the headband.
  3. Wear the headband with the clouds to complete the look.

6. Bird-Brained

Description:
This idiom refers to someone who is not very smart. The costume involves creating a bird-like appearance.
Materials:
  • Feathers
  • Hot glue gun
  • Headband
  • Yellow face paint
Instructions:
  1. Glue the feathers to the headband in an upward position.
  2. Paint your nose yellow to resemble a beak.
  3. Wear an outfit that matches the feathers to complete the bird-brained look.

7. Pretty Please with a Cherry on Top

Description:
This idiom is used to make a request more appealing. The costume involves adding a cherry on top of your head.
Materials:
  • Foam ball
  • Red paint
  • Red pipe cleaner
  • Headband
  • Hot glue gun
Instructions:
  1. Paint the foam ball red to resemble a cherry.
  2. Insert the pipe cleaner into the foam ball to create a stem.
  3. Attach the cherry to the headband and wear it to complete the look.

8. Fork in the Road

Description:
This idiom means a point where a decision must be made. The costume involves creating a road with a fork in it.
Materials:
  • Dark t-shirt
  • Masking tape
  • Plastic fork
Instructions:
  1. Use masking tape to create road lines on the t-shirt.
  2. Attach the plastic fork in the middle of the road lines.
  3. Wear the t-shirt to depict the idiom.

9. Cat Got Your Tongue

Description:
This idiom is used when someone is unusually quiet. The costume involves creating a cat and tongue combination.
Materials:
  • Cat ears headband
  • Fake tongue
  • String
Instructions:
  1. Wear the cat ears headband.
  2. Attach the fake tongue to a string and let it hang from your mouth.
  3. Optionally, wear a cat-themed outfit to enhance the look.

10. I'm All Ears

Description:
This idiom means someone is listening intently. The costume involves creating a lot of ears.
Materials:
  • Headband
  • Fake ears
  • Hot glue gun
Instructions:
  1. Attach multiple fake ears to the headband.
  2. Wear the headband and an outfit that complements the ears.

11. Piece of Cake

Description:
This idiom means something is very easy. The costume involves dressing up as a piece of cake.
Materials:
  • Cardboard
  • Paint
  • Headband
Instructions:
  1. Cut out a piece of cake shape from the cardboard and paint it.
  2. Attach the cardboard piece to the headband.
  3. Wear the headband and an outfit that matches the cake colors.

12. Break a Leg

Description:
This idiom is a way to wish someone good luck. The costume involves creating a broken leg effect.
Materials:
  • Fake cast
  • Crutches
  • Bandages
Instructions:
  1. Wear the fake cast on one leg.
  2. Use crutches to walk around.
  3. Wrap bandages around the cast and crutches to complete the look.

13. Cold Feet

Description:
This idiom means someone is nervous or hesitant. The costume involves creating the appearance of cold feet.
Materials:
  • Blue socks
  • Fake icicles
  • Hot glue gun
Instructions:
  1. Attach the fake icicles to the blue socks using the hot glue gun.
  2. Wear the blue socks to depict cold feet.
These idiom costume ideas are not only creative but also relatively easy to put together with basic materials. Whether you're attending a Halloween party, participating in an idiom parade, or just looking for a fun way to dress up, these costumes are sure to impress and entertain.
Costume ideas

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