knock a buzzard off a shit wagon 

the ability to cause a stinch so profuse that the possibility of a buzzard being knocked off a shit wagon is actually thought of

His breath could knock a buzzard off a shit wagon.

knock a buzzard off a shit wagon by JKB March 12, 2004

knock the buzzard off a shit wagon 

a phrase used to describe a powerfully awful smell, or a lingering stench of profound funk.

Good God man, that fart could knock the buzzard off a shit wagon. I think I'm going into olfactory shock.

knock the buzzard off a shit wagon by MicahtheDangerous December 23, 2011

knock a buzzard off a shit wagon 

something so rank it cannot be described

That kid's b.o. would knock a buzzard off a shit wagon.

knock a buzzard off a shit wagon by spandex tubetop December 2, 2003

knock a buzzard off a shit wagon 

to smell very bad (often with could, or would)

Damn, the smell of that those gym clothes is enough to knock a buzzard off a shit wagon if you'll pardon my language.

knock a buzzard off a shit wagon by The Return of Light Joker May 22, 2011

Puke a dog off a gut wagon

Something that is really nasty

Uuhhhhhhgggggg this coleslaw is so gross you could puke a dog off a gut wagon!

Puke a dog off a gut wagon by puddytat April 27, 2019