Swamp johnny 

The act of taking a poo

Guys, I'll be back in a few. I gotta go take a swamp johnny!

Swamp johnny by jaime207 February 21, 2021

swamp johnnying 

Placing a condom on the penis and proceeding to urinate and swing back and forth until the condom bursts.

I can not believe Aaron was swamp johnnying last night! Some mug is going to have to mop that mess up!

swamp johnnying by Barlow & Daz February 16, 2017