(noun) - a circumstance of underwear that have crept up into the butt crack.
I hate these underwear. They keep giving me fish bite.
To curl your lips over your teeth, then bite another person. It doesn't hurt, and it resembles how a fish would bite.
"Quit Fish Biting me, you weirdo!"
"A Fish Bite on the face can be just as good as a kiss, and less painful than a bite"