Two People With a Strong Bond . Their Relationship Is a Lock & No Key Can Break It. They Are The Only Ones Who Have The Key.

It"s usually used when you're talking about your best friend meaning he/she holds you together and keeps you in check. Also could mean you two belong together.

The act of performing anal sex on a woman and being able to tell anyone in a very clean and discreet manner. It is also a way for a woman to show her man that she is willing to go above and beyond the call of duty to please him.

A new sex term, a girl's private part is the lock and the boys private part in the key. For gays it's still the same, for lesbians it's 2 combination locks.

The lock and key theory was dreamt up in Liverpool, England by an un-named genius. It states that a guy is like a key, and a girl is like a lock. A key that opens many locks is a master key, yet a lock that is opened by many keys is a shitty lock. This theory is rarely favoured by females... for some reason.

Key-lock a word used amongst elementary students when on the bus and a “Cool car” pass by and they want to “Claim” it as their own. The first prepubescent boy to claim key-lock upon a car now has the respect of all the other students as if it was his car.

A phrase people from the ghetto/hood says when they see the car that they want.