A variation of motorboating / submarining; placing the head ass-to-face, motorboating the butt cheeks while being defecated on, urinated on, or farted on.
"LMFAO you can't be serious? A Dirty Jetski? HAHAHAAA that's sooo fkngross.."
The act of saying/doing obtrusively douchey and/or leadinga surface level existance that consistently irritates those of higher intelligence and/or depth. The word originated from the analogy that someone who rides a jetski is a surface level douche and jetskies (typically in a circular pattern) because they fear/are intimidated by the treasures in the depths of the sea. See Synonyms: BBP/Basic Bitch Peasant/Basic Bitch
1st party: "Do you see the tribal st.patty's day shirt that dude was wearing?"
2nd party:"Oh you mean the one that matched his tribal tramp stamp?"
Unison:"What a Jetskier!" (typically followed by maniacal laughter)
When you put your mouth on just one boob, make a sound like a jet-ski, and bob your head up and down to simulate a jet-ski hitting waves, flattening the boob out with your face each time you land. It's not quite a motorboat...it's a jet-ski.
Henry removed the hooker's bra, seeing that she had miscellaneous crumbs and what appeared to be crusty cum stains between her titties, he opted for jetskiing that bitch instead.