cum bumps
typically refers to a homosexual act in which, one partner snorts semen into their sinuses, similarly to snorting a line of coccaine.
After Seth farted out Jamie's semen, Jamie proceeded to do cum bumps off of Seth's buttocks.
cum bump
a failed facial in which semen is accidentally and forcefully ejaculated into a nostril
my boyfriend wanted to give me a facial, i ended up getting a cum bump!