When the firebox door of a steam locomotive is opened in a tunnel, with the blower on. The action of opening the firebox creates negative pressure in the cab, thus forcing the contents of the firebox into the cab (coal, fire, etc) usually resulting in the deaths of the crew.
by ShitDemon01 December 30, 2020

by Doctor Uranus February 3, 2021

The delicately balanced art of getting your cock sucked while taking a dump, combined with the holy grail of the splash from the dump landing in her eye.
With one big splash and a squeal, my blumpkin turned into a blumpkin blowback, pushing me right over the edge!!
by Dirty girl April 23, 2018

When you're simply too lazy or poor to get more tissue so you pick up some old crusty tissue out the bin to blow your nose on so you don't have to move or buy tissue.
"Hey man you still got that cold?"
"Yeah, I was so tired I had to Crusty Blowback I couldn't be bothered to get more tissue "
OR
"Fuck man I just had a wank and I had nothing to clean with so I had to Crusty Blowback!"
"Yeah, I was so tired I had to Crusty Blowback I couldn't be bothered to get more tissue "
OR
"Fuck man I just had a wank and I had nothing to clean with so I had to Crusty Blowback!"
by Queen Noodle October 3, 2017

Blowback is when a person cuts a fart (passes gas) and the wind blows the stench of the fart back into his own face.
by Bailmaninmo July 18, 2025

The negative reaction by an audience to someone who displays or experiences higher status, often as a result of resentment, envy, or jealousy at the person's status.
I don't want to wear my expensive watch to meet that group because of the potential status blowback.
by Human Peacocking April 25, 2024

During missionary, while thrusting hard to bring your partner to pleasure, she farts so hard that it lifts your ballsack up mid-thrust
by stoicfather December 4, 2024
