A 'game' made up by the students of Swanmead community school in their 8th year. There was a girl at school second name Sherman who got picked on. For some reason her name has been connected with the game of smacking someone on the head and shouting sherman. It transforms into a game by people getting Sherman revenge. If you don't shout Sherman it is just bullying and that will not be tolerated.
Note: Has noe spread from these evil little bastartds to the whole of Wadham school.

a PCP cigarette (see sherm) referneced in Peter Frampton's classic rock anthem do you feel like we do

Noun: An American. Cockney rhyming slang: Sherman Tank - Yank. Real Cockney rhyming slang only uses the first word, which sounds nothing like the thing being referred to in the rhyme so secrecy is preserved.

A slang term for illegal hallucinogenic mushrooms (aka "shrooms" or "magic mushrooms"). Often used as a code word for telephone conversations or conversations in public settings where talk of illegal activities could get one in trouble.

In such conversations Sherman is often referred to as a person, such as saying "is Sherman around?" to ask a dealer if he/she currently has any shrooms available for purchase.

slang, in refrence to a Sherman Tank, so Sharman Tank = wank

Kind of ambiguous, but generally meaning cool.

The act of doing something mischievous or incoherent while under the influence, intoxicated, or when something is wrong inside of the brain.

Tank top shirt. Tank top->Tank->Sherman