Food & Drink:
* Giant Gummy Bear: A classic, always fun, and easy to put together!
* Grateful Dead Bear: For the music lover who appreciates the funny side of fandom.
* Green Bean: A simple and silly costume that's sure to get a chuckle.
* Gorgonzola Cheese: A pungent, but undeniably funny costume.
Characters:
* Ghostbuster: A classic, with a lot of fun costume options.
* Gandalf: For the fantasy fan, a classic and iconic character.
* Grumpy Cat: A meme come to life!
* Gwyneth Paltrow's Goop Candle: A surprisingly funny (and possibly controversial) costume.
Other:
* Giant Golf Ball: A simple and visually funny costume.
* Garbage Can: A unique and unexpected costume, perfect for a group theme.
* Giant Gumball Machine: A whimsical and fun costume idea.
* Grateful Dead Tie-Dye: A simple and fun way to show your love for the band.
Remember, the key to a funny costume is to embrace the absurd! Have fun with it, and don't be afraid to get creative.