A penis that smells 'bad'. The smell can resemble many off-putting things, like cheese, fish, sweaty clothing, or anything else that smells rotten. It is considered unattractive and gross, especially when one is near a stinky willy, for example, when in sexual intercourse. A stinky willy usually occurs when one does not wash ones self for many days, or after eating a stinky meal like a curry, or doing large amounts of exercise without washing. A stinky willy can be remedied by having a good wash, and spraying deodorant in the groin area. The equivalent for a woman is a fishy pussy.
I fancied this guy so much, but after smelling his stinky willy, I dumped him.
by HeadingWest August 10, 2011
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A stinky willy is when you masterbate on the toilet whilst having a shit and fall face first onto the floor shit on your own cock and just as you are about to climax you get a wiff of your shit and climax in your own mouth
Scott: 'Preforms a Stinky Willy'

Scott's Mum: SCOTT WHY IS THERE SHIT ON YOUR COCK AND CUM IN YOUR MOUTH ARE YOU ON BENEFITS.

Scott: 'Precedes to cry and choke on his own semen'
by Willywillyboy126969 February 12, 2022
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If you want to perform the sexual act stinky Willy, all you need to do is to find a friend to gangbang a sick whore with. make your friend lick your balls, then stick them into her waxy ear and your friend fucks the sick whore in the ass with his balls.
Hello bud, do you want to gangbang this sick bitch?
Hell yeah faggot let's do the stinky willy!
OOOOH yeah my brother.
by hunthah8er69 January 30, 2019
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