The little shit particles that fly out of you toilet onto the wall after flushing. More common after a full night of drinking Hand sanitizer and Rez wine.
I told my cousin to scrub his Manitoba backwash off the wall.
When a coked out white girl with poor dental hygiene backwashes into your draft beer at a Nickelback concert.
Hey bro Lisa was railing it up hard after supper last night and later on at the show she Calgary Backwashed chunks of hot dogs and onion rings into my beer.
The act of one partner farting into another partner’s butthole and then that person farting out their partner’s fart they received.
Honey, come back that booty up here for a game of butthole backwash.
The part of dry cereal that ends up in the box rather than the inner bag due to slipshod pouring of said cereal.
This Fruit Loops box has some serious cereal backwash issues!
What's left behind after a woman takes a big swig out of the bottle right after blowing a dude at bottle service in the VIP lounge.
Careful bro, that chick drank right out the bottle after she got done blowing me, there's probably some Miami Backwash in there now.
The act of ejaculating on your partner and then getting some wet or dry pasta and smearing it with your penis
Vito said he's going to get Marcella an Italian Backwash
Kissing a girl who has sucked a dick without prior knowledge.
"Did you hear? The Prom King got a Somoan Backwash"