bun buddies 

When you and a friend of the opposite sex (most of the time you girlfriend or boyfriend or soon to be) stare at each other seductively while eating a burger, Sandwich, etc

Me and my friend were scared that we might turn into Bun Buddies

bun buddies by Gray Stewie February 6, 2017

bumbuddies 

A pair of men that perform in homosexual acts.

"Look at them two men, what bumbuddies"

bumbuddies by Little Trev August 23, 2008