the back side of your knee, or back side of your knee cap. due to its difficult-to-reach location it tends to sunburn often and remain hairy after the rest of the leg has been shaved.
ann: oh my gosh jan, your back caps are so red!
jan: i know! when i put sunscreen on i missed that part and now my back caps hurt like a bitch whenever i sit down.
jan: i know! when i put sunscreen on i missed that part and now my back caps hurt like a bitch whenever i sit down.
by whoopie August 13, 2007

by Ytown thug March 15, 2012

by Can't get right! June 01, 2017

by givemyhoanabelincoln October 13, 2011

by Pullmycapback December 16, 2019

An event or experience so intense and mind-blowing, that it has the power to peel back the foreskin of an uncut penis.
Brian: Hey, did you see that flash mob hit the 7-11 on Charles?
Bill: Yeah, they trashed the place in like 15 seconds
Brian: I bet that doesn't happen up where you live
Bill: Hell, where I live, it'll peel your cap back just seeing more than 2 people at a store at once
Bill: Yeah, they trashed the place in like 15 seconds
Brian: I bet that doesn't happen up where you live
Bill: Hell, where I live, it'll peel your cap back just seeing more than 2 people at a store at once
by FriendOrFlake December 04, 2014

by Vuhguyna November 06, 2021
