Top definition
The last fart that forces you to take a shit. Once the anal "seal" is broken, you must urgently find a toilet for a number 2.
"It's 30 minutes to the next rest stop. I can't fart now, it could be the seal breaker."

"After that seal breaker, I quickly had a massive dump. I let out a sigh of release in the restroom after that BM.
by yes juanito yes October 05, 2016
Get the mug
Get a seal breaker mug for your fish Bob.