Top Definition
-the little annoying piece of skin that peels at the bottom corner/side of your fingernail
-usually on the thumb
-can be peeled/ripped off with your other fingernails (usually the pointer finger on the same hand)

(not to be confused with a cuticle)
"Dude, I've had this incapacitator on my thumb ALL week and it's really starting to piss me off cuz i can't stop picking it!"
by twiddlethumbs<3 May 23, 2009

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