Whenever a guy is having sex with a woman from behind while she's on a heavy flow for her period, and takes his dick out and whips her on the back with it, leaving long red streaks across her back, much like when a member of a religious organization flogs themselves as a form of self punishment.
"Andrew was fucking Deanna hard from behind, and her period was really going strong, so he pulled his dick out and gave her the backwhipping of a lifetime".
A term used when bored in maths class, often to describe how one would like to exit the classroom, as maths is extremely boring and worse than water torture.
"Freya this is soo boringgg, I am so going to fail maths!"
"I reckon, why don't we just backflippical the hell out of here already!"
back lipping
noun
a word formed by omitting a southern twang out of ones mouth slowly part of a back woods country slang which it is derived.
to speak out of ones ass
Back-slopping method is carried out by adding a small amount of fermented products into fresh ingredient and then is left to be fermented in room temperature.