To have something under control. Same with on point. Doing something really well, and having it be all yours.
Yo if you have that girl "on lock" just ask her for her numberma boy.
By Caritta
On Lock
A synonym for being in jail. It can be the city or county jail as well as the state or federal prision. However if the confinement is involuntary then your are on lock.
Celes: You keep your dead girlfriend in some old dude's basement? Gross.
Locke: I'll protect you!
Terra: I thought you said you would protect me, asshole.
By Helga
On-lock
A term used to express having something perfected or easily obtainable.