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1.
The wiping of your A-hole after a soppy, wet fart.

Sometimes when going to the toilet for, what you think is going to be a shit; you end up just doing a wet fart. A quick wipe would leave traces of shit on the toilet paper.
This would be a fart wipe.
"hey, you didn't flush everything from that shit you just had!'
"I didn't take a dump, it was just a fart wipe

Or

"mate, I've just done a really wet fart and think it might skid my pants"

"here, borrow a tissue and have a fart wipe"
by Beach slick November 02, 2009