When 100% just isn't enough, you gotta crank it up and pull out all the stops. Typically seen in robot animes where the main character or characters pull together and kick the villains ass by defying the impossible and blasting them to smithereens.

Usually accompanied by hot-blooded yelling.

The act of smoking a 120mm cigarette. Something every woman should be doing.

What someone might say to someone whose birthday is that day (usually on their Facebook wall).

It simply means that the person saying it wishes the birthday boy/girl a long & happy life.

Not to be mistaken with "add 120".

As explained and summarily down-thumbed in the entry for 120 (don't you love the editorial power of inifinite monkeys?), "120" is a numerical acronym symbolizing religion, with specific reference to peace of mind acquired through respect of a diety but conspicuously without awknowledgement of any particular sect.

120's, therefore, are any quantity of religious nouns, and are highly contextual. The term is commonly used to reference religious lessons, religions texts and spiritual moments. Furthermore, among faiths which engage in ritualistic cannibus consumption as a means of altering perception, 120's may refer to marijuana cigarettes.

It has nothing to do with guns.

A now-default program on MTV that showed alternative/modern rock videos that didn't fit MTV's regular playlist. Was eventually moved to MTV-2, but was canceled and replaced by Subterrain.

two dime bags of weed rolled into a blunt using a $100 bill

A person who pays a black stripper $120 for a sexual favor, namely a handjob.