sweat sandwich 

When you and your partner engage in nude sexual activity and it gets so hot that your sweat acts as an adhesive and sticks your bodies together.

Dude, my girlfriend and i made the biggest sweat sandwich ever last night! i could barely move!

sweat sandwich by sowwy daddy May 4, 2011

Seat Sandwich 

Describes when you're on some form of public transportation (bus, train, etc) and you're uncomfortable from the people on your right and left. Used particularly to describe frustration when the people on the right or left can make some more room for you but don't.

A: You look beat!

B: Yeah, I was stuck in a seat sandwich for the full 2 hour train ride here. The idiot on my left had room but he wouldn't budge. I hate public transit!

Seat Sandwich by GeneRickyShaw2 May 27, 2016