Not a spleecher or a barfoom in that the originator of these stinkbombs cannot be detected until it is too late.
Some broccoli-munching vegan cut a silent but deadly stinkbomb on the bus. Eat meat, twerp!
by Cosmicstargoat April 22, 2004
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Legend has it that a man named Pierre Chappele, when on a recon mission, he found an enemy that was going to the bathroom.

Pierre snuck up behind him and slit his neck, his last words sounded like a mild fart.
Silent But Deadly is now used as a military term to describe an AWOL (Absence without leave)
by Not Zane July 23, 2004
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1.n. A classic old school horror movie about a killer dressed as santa claus.
1. Lizloo and I are going to get some popcorn and watch silent night deadly night...then fuck.
by B Brian Blair March 30, 2008
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A gap in which you have to silently masterbation while in the same room as someone else without getting caught
Person A "hey what were you up to last night?"
Person B "I was doing the silent but deadly fap challenge, how about you?"
by Wanna date? November 11, 2019
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