(noun) semen, or male reproductive fluid, containing spermatozoa in suspension.

ORIGIN late Middle English : from the Latin boneritus poovius.
I had this big fat boner poo waitin to splash all over my girlfriends fuckin face, man. She lapt that shit up man.
by Agnellos Pizza November 10, 2009
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When you need to poop and you get an erection from poo rubbing up against your sphincter.
Man, Joe, I've got a poo boner and I need to use the restroom.
by PinkPussyTom October 30, 2022
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An erection that is caused from using muscles in your butt to not poop your pants.
John Doe got a poo boner when he was trying to hold a trouble maker(trouble maker: a huge dump) back.
by Dinger8525 December 31, 2011
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