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 Hugh Johnson October 3, 2005
A Silet But Deadly fart. This fart stinks the place out but is as quite as a pin drop.
Diego:" I just done an SBD"
Fran:"that's why is stinks, ur soooo silly"
by Skz3 May 3, 2017
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 6, 2003
"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
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
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 3, 2005
Smicks (women at Saint Mary’s College) before d*cks (Notre Dame men)
“Hey i’m gonna have to cancel plans, Johnny asked me to go over to ND

“Come on girl, SBD”
by wonkeywalrus101 October 14, 2018