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1.
Bummer pants:n: Pants worn generally by a female that are so tight that they are damn near impossible to take off when you are trying to start the action of sex hence cockblocking. Bummer pants are sometimes wore on males as well
Jacob: Dude I was totally about to fuck this one chick I met at the concert last night but she had her bummer pants on :O
by LPHAVIK February 25, 2010
 
2.
A term used to describe deep frustration and sadness

created by Caitlin Moynihan
"Your stuck in traffic? Bummerpants!"
by emnkels December 04, 2010