Astrophysiics's definitions
When five guys wearing sunglasses fuck a single girl, preferably one in a nurse outfit, all pull out and ejaculate onto her back at the same time, while shouting: "Squirtle Squirt!".
"Dude, we took this girl back to our hotel last night, and before you know it, we were squirtle squadding!"
by Astrophysiics March 31, 2015
Get the Squirtle Squaddingmug.