Meat Swapping 

Two men engaging in sexual activities.

i heard does two boys Meat swapping in the bathroom just now.

Meat Swapping by Metro Boomen June 20, 2016

two meat slapping 

The penis and the vagina or even a man’s anus doing the thing together. Feeling sexually aroused

I heard two meat slapping against each other!

two meat slapping by hornyfujoshi February 16, 2021

slapping the meat 

Masturbatory term.

See also:
stroking the sausage
whacking the mole
petting the weasel
spanking the monkey
flogging the dolphin
tickling the pickle
shizzling the nizzle
playing the skin flute
cream-filling the donut

"I spent all last night slapping the meat."

slapping the meat by Dean March 25, 2005

slapping the fat with my meat salami 

a wildly entertaining new game involving a really fat girl in which one or more males stand around her and see who can leave the biggest mushroom stamp.

Jaime, Che, Ian, and Jeremy had played a viscous game of slapping the fat with my meat salami last night in which Che was disqualified for licking the fat before slapping it.

slapping the fat with my meat salami by bobso February 21, 2008