>>937342822
Okay, well, "beefed" in today's language means something like "argued in a friendly way" or "argued for fun". Not really anything to do with farting.
Some options might be:
Who the fuck farted?
Who the fuck stank it up?
Who the fuck passed gas?
And the ever-popular:
It smells like something crawled up inside you and died!
Good luck with your story.