When someone is performing a blowjob on you, and just as you're about to cum, they put their thumb over the end of your dick. This causes the cum to shoot back into you, usually straight into your spinal column and crippling you for life.
Person A: How did you become disabled?
Guy in wheelchair: I was having sex with a hooker but she did a blowback on me so she could steal my wallet.
Person A: LOL!
Guy in wheelchair: I was having sex with a hooker but she did a blowback on me so she could steal my wallet.
Person A: LOL!
by NickC. September 15, 2010
the act in which a man causes a women to laugh as he blows his load in her mouth, causing the load to fly out of her nose back onto him.
by Superman307 August 20, 2010
The ridiculously overspiked hairstyle typical of the gotti brothers and the associated Gottigays wannabes. It is a fashion statement typically accompanied by fake orange tans and popped collars.
by MK86 October 24, 2006
The particulate matter that is deposited underneath a toilet seat after a person has experience a particularly violet bout of diarreah.
Did you hear Frank just now? Sound like he left a lot of blowback on the seat. Don't use that stall.
by Tom Sanborn September 01, 2006
"When Steve blew a hot dog flavored burp into my face, he had no idea I'd reciprocate with a forceful, well-timed blowback."
by Lboogie August 13, 2007
Microscopic, particulate matter expelled from one's anus during flatuent activity, usually confined to one's underwear if such garments are in fact being worn, though its infinitesemal size can still disperse into the surrounding air regardless of the presence of protective garments thus landing on your peanut butter and jelly sandwich.
Johnny ripped a huge fart when his girlfriend, Carmen, was talking on the phone and she did not realize that his fecal blowback landed in her Cesar salad.
by Professor Rizzle March 18, 2010
Anal sex Oreo blowback
by ASH9LONDON January 27, 2014