When a group of male friends or strangers meet up in a bathroom and spontaneously start pinching the others' penises with homoerotic glee. The "switch" part comes from switching the lights off.
Do you remember last night, Alfred? When we caught Joshua and his boys playing Pinch and Switch in my uncle's dirty washroom for almost an hour? I heard them giggling the whole time they were in there, but by the time they came out they were completely silent and stone-faced. I wish they had invited me, too...
by Djentistrulyoutrageous February 10, 2015
Get the Pinch and Switchmug. A 2 Male Dance lift that requires a carefully placed hand in the groin area. A bit like a fisherman taking a crab out of the net, otherwise it’s a trawlerman’s claw.
by Rugbydaddy February 7, 2020
Get the Fisherman’s Pinchmug. A Treadmill Pinch happens when you try to have sex with the gap between your treadmill and the floor, then by some mistake the treadmill is turned on and it rips your foreskin off giving you a Jewish trim.
by Mr.FoxNoir June 17, 2019
Get the Treadmill Pinchmug. 
taco pinch·ed , taco pinch·ing - Girl hating on girl. A jealous female who interferes and deters sexual advances towards another female. Usual behavior found in most undesirable and vindictive females.
by Jade G August 2, 2007
Get the Taco Pinchmug. When you're wiping your anus after pooping and you don't want to get the poop on your balls, you pinch the toilet paper together to get the last bit of poop.
by Ian[FL] November 11, 2006
Get the Charlestown Pinchmug. This is the act of consuming pennies and later shitting them out. One who performs this act is a penny pincher.
As I swallowed the handful of pennies, all I could think of is how badly I'd be penny pinching the next day.
by bLiTcH January 9, 2008
Get the penny pinchingmug.