When you fart and burp at the same time or almost at the same time. The Fart comes first, then within 10 seconds or less, the burp comes. Fart is methane and sulfer compounds and burp is carbon dioxide. Fart burps are super rare, but some people fart burp more often.
Tyler: *Fart

*1 second later
*burp
Tyler: I Fart Burped! I Fart Burped! I Fart burped!

Josh: Errrr!
by HawaiianPunch1 April 29, 2023
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When you trap your fart in a container, inhale it, burp it up, and blow it into someones face.
Yesterday after getting out of the water I ripped such bad ass in my wetsuit that I decided to fart burp Kristin which smelt so horrible it nearly made her vomit.
by Freight19 July 31, 2010
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A vile smell worst than a fart but it comes out your mouth. Smells like a zombie crawled inside your mouth down towards your stomach. Then proceeded to raise all the vile smelling foods you have had in your life and then for 5 months you can't stop burping it.

Warning

Shellfsh can give you fart-burps. Will make you fail an exam and will inflict untold suffering on millions.
Alex ''hmm these oysters are okay''

Ban '' suggests that we collect the oysters and sea shell fish from the harbour
Alex '' I'll take a few back for my Dad as well...

5 hours later......

vomiting and food poisoning infects all three of us.

Two months later Ban ''My burp really stinks.''

Alex '' smells like a fart but its really a burp''
Ban'' a fart-burp''
by Colesy September 9, 2013
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A fart that sounds like a burp.
Damn, Joe farted and it sounded like a burp. Let's call him the burp fat king!
by Steve January 22, 2005
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The act of farting into one’s mouth while they burp to make the worst of tornadoes.
Jimmy loved when Derrick gave him a burp fart!
by Burpy Fart May 14, 2023
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