fingering or performing oral on the loose flaps of a roastie's labia. may also refer to giving oral to a fat chick
"dude you know your girlfriend is a roastie right?
"You've been rummaging the ham haven't you?
When one shits too hard, it causes their whole ass to move
Q: BRUH, that Wendy’s 4 for $4 made me destroy your toilet
L: BRUH, you just had a Rummaging Rudder
When a sexual partner goes rooting around through your phone looking for shit to get pissed off at you about.
Be it contact with a friend they don't like or a past encounter your trying to catch up with.
Maggie: Why's Georgio pissed at you?
Susan: I left my phone at his place.
Maggie: Did that dumb ass go cell phone rummaging again?
Susan: Yes! and I was talking with my ex Troy about completely innocent things.