a fun game invented by the high school marching band drummers of berlin, ct (also sometimes practiced by Berlinites or a combination of both). basically involves the following procedure:

1: Aquire someone's backpack while they are not looking
2: Remove the contents of the main pouch carefully, being sure to keep everything in the same order (or disorder) as it was found
3: Flip the backpack inside out
4: Put the contents of the backpack back into the now inverted backpack
5: Zip it up and put it back where you left it

the victim of this pointless and rather humorous attack will be most suprised when he/she turns around and finds their backpack flipped inside out. the same attack can be practiced by taking the backpack from their hands and using force to keep the victim away, however, must be accompanied by continuously repeating the phrase "just let it happen.."
shmope: dude, let's do a backpack inversion with dome's backpack.
shmope's friend: ok!
*inverts backpack*
dome: wtf, you guys suck.
mike: hahaha, dome has a big head.
by shmope's friend June 9, 2006
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It is a form of reverse psychology, except the persons mind can't figure out what it means but you soul can.
if a lie is a lie then the lie must be the truth but the truth must be a lie and the lie must be the truth, etc. this is a form of Inverse Psychology
by JasonCubed132 June 3, 2015
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Using a reverse grip to release the interest-only component of your nutsack. The opposite of the Floating IO, which is a flying forward grip.
DB1: Hey RF, I noticed your triceps have developed some nice tone.

DB2: Yeah, it's thanks to all my Inverse IO action.
by The GKYer December 27, 2011
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When you are acting tough, and you get a stiffy but then you get wrecked in retaliation and your dick goes inside you.
Dan: Man, I just told my boss off and got so excited. I think I got a Bravado Boner. But then he chewed my ass out and I got an Inverse Clit.

Rick: Word.
by Pocket Rocket CPA July 18, 2018
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Insulting description of a person whose condition is "full of shit" because his or her ass points inward, directing excrement there.
I don't care what Erika says, I know that Pierre didn't give her a Cincinatti brown out last night, she is such a rectal inversion.

Khrystal's pimp called her a rectal inversion when she insisted that she only made $40 last night.
by mr pinky June 2, 2007
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the biggest bot with the biggest ego
inverse james: LALALA
by Nona. November 1, 2019
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A gentleman's term for the sexual position commonly known as sixty nine.
"Good morrow Bartholomew, how was your dame last evening"

"Well not to be too forward William, but we engaged in inverse fellatio for the first time and I have not been brought to climax so vigorously since my first whore!"

"Exemplary!"
by bigsnackman420 June 20, 2018
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