silent-but-violent (plural silent-but-violents)
- (slang) A fart that is very quiet but has a very potent smell.
2013, Simon Mitchell, The Great Stinkathlon:I was lucky enough to get six free crates of beans every week. Before I could cut loose with one of my silent-but-violents, I heard the high-pitched ring of Mr. Windybottom's mobile phone.