Top Definition
A quiet flatulent that makes its presence known by a foul odor; "silent but deadly"
Woo, baby, you blow out another SBD on me or what? Damn!
by Ric Dog June 06, 2003
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1. A "Silent But Deadly" fart. See also "ghost turd" and "air biscuit".

2. The airport code for San Bernardino International Airport.

3. The Douglass Dauntless, an American World War II dive-bomber aircraft.
I can still fly my fume-belching SBD out fo SBD because it's quiet enough.
by Warren Fwy October 03, 2005
A Douglas Dauntless airplane from World War II.

A silent but foul fart. "Silent but deadly."
Lieutenant Walters climbed into his SBD and shouted at Sergeant Powers, who had left an SBD in there.
by The Wog Whomper May 11, 2005
"Silent But Deadly"
fart that makes a noise like "pfffft"
usually warm in temperature and eminating an offensive odor
Man, i gotta get the fuck out of this elevator, someone cut an SBD!
by Fartdust December 11, 2003
An audio-phile abbrevation for a soundboard recording. This recording is taken directly from the main line output of the mixing console also called a soundboard. Also see DSBD.
"10-10-94 Phish live at Bryce Jordan Center, State College, PA, SBD, set 1"
by radaeon October 03, 2005
A silent but deadly binderfender, of the type typically emitted by a nice lady in church.
Mrs. Posselthwaite sat in the back row in church. She blewan SBD. The parson stopped his sermon, crinkled up his nose, and fanned himself with his notes. "Whoa!" he said. "Was that you, Clarissa?"
by Delicious Tuna Wanda September 25, 2007
Silent But Deadly.- Fart, air biscuit, phewumatic turd driver. A warnig of smells to come.
I alway yell 'incoming' when I let go a SBD.
by Starman February 13, 2005
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