oxygen mask 

adj. too close for comfort, generally to the face

I'll wear dat ass like an oxygen mask.

oxygen mask by don nalgotas September 7, 2005

oxygen mask 

the act of doing 69 while the guy is on top, thus causing the scrotum sac to cover the mouth and nose like an oxygen mask

I was with a girl last night and i gave her the oxygen mask so long she was fighting to push me off of her.

oxygen mask by ssgtski October 29, 2009

Oxygen mask 

Sucking farts out of someone else’s asshole.

Santa saves his farts all day until he gets back to the North Pole where he gives Mrs. Clause the oxygen mask.

Oxygen mask by Roy G. Biv November 18, 2021