Usually the modern day word for 'mate' has been abbreviated to the simpler term of 'm8'; read as 'meight'. As you know the number 9>8 therefore we have the conclusion that m9 is better than m8.

Pronounced 'mnine'.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

A version of m8 spelled incorrectly, sometimes on purpose as a joke. m8 (m-eight), short for mate is often used in in-game chat on consoles and PC to be as efficient as possible when communicating.

Mountain-Dew fueled and sleep deprived, childish gamers sometimes lose all ability to type correctly when raging and type m9 instead of m8. An unavoidable typo when blinded by rage because 8 and 9 are next to each other.

Slamber City's phrase... M9 is everything and everything is M9

Commonly thought of as mistakes on messenger services, however the terms are both equivalent to M8 - obviously an abbrieviation of the word "mate".

when some one is even better than a mate. can also be used for great, gr9, hate, h9, etc.
the value decreases or increases depending on how much the word applies to the situation, eg, gr7 would mean something not too great

alternative to m8.. a piss take really, but you love it.