A type of homosexual intercourse whereby a man inserts his penis into another penis and climaxes inside. Similar to the way snuffleupagus might reproduce in nature. The seemingly impossible biological properties of this act make it all the more pleasurable when actually completed.
Ohhh woha! David just tricked me into watching a video called kids in the sandbox, it looked like a regular adult film until this lady started mushroom stuffing the man with a dildo. I need to go rinse my eyes with drain-o!
by BizurdFluz December 8, 2008
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Taking your mega-huge raging boner and stuffing it under your elastic shorts band or belt area of your pants to keep it from sticking out.

Saves from embarrassment as well as keeps your woody from knocking items such as drinks off of table tops. Also prevents potential injury.

(Inspired by Superbad, also a vital component of surviving junior high)
Did you see what Jessica was wearing today? I had to stuff mushroom it through my entire presentation!

Good thing I pulled a stuffed mushroom otherwise the elevator would have smashed my cack!

I had a stuffed mushroom during gym class today, I don't know how I managed to run that mile!
by J Westeezy July 6, 2008
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When one person carefully picks his/her nose and selectively puts the findings in another's mouth.
by Skippy V. November 23, 2011
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When you dip the tip of your dick in shit on a color palette and mushroom stamp your significant other.
Andy gave me a Kentucky Stuffed Mushroom during foreplay lastnight. Unfortunately he used my color palette.
by The Bearsaurus January 14, 2017
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The act of while having sex, stick a mushroom up your partners anus or vagina(your choice) then having sex with your partner in that area.
Sally was hungry for something new, so she had a Alabama Stuffed Mushroom with Tommy
by THE BIG MAN OF THE HOUSE February 23, 2010
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When you nut in her when she has a yeast infection.
Hey, don't yuck my yum, the stuffed mushroom has some really interesting friction to it.
by malkarivka May 22, 2020
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When someone stuffs a juul in their penis and someone else rips it
When someone asks if they can rip your juul so you stuff it in your peen hole and tell them to rip it out of that, this called an Oklahoma Stuffed Mushroom
by Ilikeitfast69 November 26, 2020
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