sandwich sisters

n. A gay male couple one reguarly has threesomes with.

"I'm going 'round to my sandwich sisters' tonight for a bit of action."

by Chris Kirk April 13, 2005

sister sandwich

Having two sisters in the same bed with you for some Ménage a trios fucking action.

I made a sister sandwich out of Kim and Jen last night after the kegger. Whoo!

by moosehead7 August 09, 2006