Squirrely Kid 

Someone you know only by association, NOT BY CHOICE, that exhibits squirrely behavior. Heavy breathing, constant sweating, nervous twitching, shy in most social situations.
Someone who can't say no because they will sacrifice anything for acceptance.

I'm not going to buy a book this semester, I've got a squirrely kid next to me, I'll use his.

Don't you feel bad manipulating him? Nah, he's a squirrely kid.

Eugene, from Hey Arnold

Squirrely Kid by Paddy Mack February 7, 2010

squirrel kid 

A small kid whose physical conditions are a) no higher than 4'11" b) a Causian teenager and c) no heavier than 90 pounds and who acts like he's gansta or a skater punk. basically they are pint sized kids trying to be bad-ass but will eventually get arrested and wake up in jail to some 300 pound redneck named Bubba who wants to make them his biatch! If a S.K. tries to mug you at night, the best defense is to hit them with a blunt object

Imagine a small ass kid trying to make you his bitch

squirrel kid by I Hate Conformists April 17, 2005