An exclaimation of frustration;
Dirty undies for females.
"Oh, shit knickers! I left my homework at home!"

"Please do not leave your shit knickers in my room."
by LindsayLu November 19, 2004
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the act of releasing small amounts of shit during the farting process
Johny, i was doing your laundry and i there was a brown stain on your pants... did you blast shit knickers again?
by SOdeadAFTERschool September 1, 2010
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