A form of homosexual foreplay where two men situate themselves naked on the floor in the shape of two 'L's with the backs of their legs together - representing two bookends from a birdseye view.
The touch of ball sacks is enough to drive those gays crazy and they are well on the road to brown loving.
"I saw this DVD called 'BookEnders'. They were bookending in it!"
A vapish dolt. An unruly sort whose behavior is often associated with staring off into space for no apparent reason, comfortable watching the grass grow, spending all day in bed looking at the ceiling.
man 1: Look at that dude over there, eatin' his fingernails and starin' at the floor.
man 2: Yea man, that dude is a bookend, ain't nothin' goin' on in his life.
When two unrelated under 18 girls who are very close friends dress alike in a slutty manner.
Wearing matching barbie pink heels and outfits.
Sometimes referred to as Barbie twins.
Matching prick teases who pretend they don't understand why the boys are hot for them.
Horny high school boy: "Dude check out Sharon and LeAnn!
They are so hot in their matching outfits!"
Other horny high school boy: "I just love Barbie bookends. I
want to do LeAnn so bad!"
Another horny high school boy: "You'd have to screw both of them, you can't break up a set!"