butt siren
i was in the middle of the hardest question on my test when tubby next to me made the biggest butt siren i ever heard
when a [fat kid] [emits] a very loud [fart] during the middle of a test or [lecture]
"i was in the middle of the hardest question on my test when tubby next to me made the biggest butt siren i ever heard" What is the definition of "butt siren"?