A slang for meth

I couldn’t care less (but one must keep up appearances, right?)

Crank (verb): stroke, as with a schlong; spank, such as with a monkey; lube (the chassis); beat (the cobb); wax
(tense) cranked, crankin', has cranked; "crankin' the shaft"

A person who is heavily involved/intrest in the fire brigade.

n. a crazy person, especially someone who purports to be a scientist or inventor who has discovered the answer to some important problem facing mankind, like curing all diseases, unlimited energy, levitation, aliens, etc.

He defends his claims with the most ridiculous pseudoscientific crankisms, and claims that the government/mainstream science/experts are suppressing the truth.

someone who is a bit of a twat or annoying you

A cheap form of meth made in trailer kitchens. often causes gritting of teeth, assholeyness, destruction, inability to pay bills, romantic relationships with ones aids infected cousin, and finally complete retardation.