A gay sex act which involves but is not limited to entering a shower, bathtub, or sauna for the purpose of contracting multiple sexually transmitted infections such as gonorrhea, herpes, and genital warts. Quite often bubble bath or conditioner is used as lubrication to penetrate the anus. This often leaves both participants feeling dirtier than when they entered.
Jole: Did you hear that Bret gave Frank a bumpy shower?

Matt: Yea man, I heard they're both burnin now

or

Jole: I've been farting bubbles all day man what happened last night?

Matt: You don't remember? We took a bumpy shower.
by Chuck VanDoren April 23, 2012
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A Bumpy Sweater Button is a man with Bumps on his extremely small penis.
That Bumpy Sweater Button has more Bumps on his extremely small penis than I've seen on a filthy warthog.
by Taz the word man April 25, 2019
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any type of sexual intercourse. Oral bumpy time is a BJ. auto bumpy time is masturbation.
she was in the bath room so long because she met up with some guy. I am assuming that they had bumpy time in a closet.
by elisabeth of neal November 03, 2009
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A rest stop area where gay men go to have anonymous sex.
Damn, I'm horny! I'm'a get me down to that hump-bumpy for a lil' bumpin'!
by straightup61 February 11, 2010
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