Definitions by Fizzlefest host

Fun Sponge 

Someone who won't do something because they are afraid of what others may think about them!

Fun Sponge = girl at party who will not ride mechanical bull cause she has a dress on...who is offered shorts and who conveniently forgets to tell you she has pants in the car...

Fun Sponge by Fizzlefest host August 20, 2012