1 definition by TeamNoSleep420

When one man starts a gangbang and no one taps him out because he's just that good.
Amanda: Hey look at Billy go

Sarah: Yea, he's a regular one man gangbang

Or

Amanda: hey Sarah how's your ass feeling today?

Sarah: Surprisingly not bad after having Billy, The One Man Gangbang. He's gentle!
by TeamNoSleep420 December 11, 2017
Get the One Man Gangbang mug.