Extra tight fitting jeans that enhance the penis area for guys. Usually look gay or are extra tight punk style. Worn on Thursdays at High Schools in Washington for a joke holiday called "Penis Jeans Thursday" Only guys can wear penis jeans, and usually they are only worn on Thursday unless you are a womo and like to wear them everyday like Nick Wax.
Really tight jeans from Abercrombie or Old Vintage tight crappy jeans that are 2 sizes too small.

Penis Jeans (noun). Used in a sentence "Hey you, nice penis jeans! its not thursday"

by Carso August 5, 2008
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Jean penis often plagues girls' with ill-fitting jeans. This condition is characterized by a large bulge in a typical penis area. This is most noticeable when sitting.
"Staci,I have mad jean penis!"
"yo check out that girl in the mom jeans, she has a bad case of jean penis"
by HSMF's April 2, 2008
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When a woman with a bodacious booty wears jeans but the front of the jeans hang loose in the crotch giving the illusion of having a male appendage even though you are a female
Those jeans give her a huge jeans penis. Nasty, wear something that fits that bodacious butt right!
by Kaery April 14, 2015
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when you sit down and are wearing jeans your zipper thing will stick out. this is called a jean penis. or jean peen.
person 1: don't wear those, they give you a major jean penis when you sit.
by i[dont]loveyou. January 18, 2008
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