1)to be under really strict, severe obligations or rules
2)to have somebody under control
1) \"Yo,i can\'t go outside man, my parents got me on lock, unda sum really strict shit yo.\"

2)Girlfriend:\"Come here, now!\"
Boyfriend: \"Im coming, sorry i can\'t go right now\"
Boyfriend\'s friend:Damn dawg she got u on lock
by vh_bkbombshell April 27, 2005
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The face one makes when someone takes a picture of their face up close, or one takes a picture of his/her own self close up, hence "locking in" the face they're going to rock in the picture.

Also see "hot face" and "hot check"
Dude 1: Hey man im gonna take a picture of your face!

Dude 2: Hold on let me lock it in
by Phil Cook November 20, 2007
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Oh shit, Locke just shunned me from #central.
by Anonymous January 20, 2004
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John Locke is not the bald dude from Lost. John Locke is an English Philosopher who even influenced the American Declaration of Independence.

"omg john locke is so awesome"
"oh yeah, I read his book."
"omfg they have Lost books?"
"You lost your book?"
"What book?"
"..."
by g f b February 27, 2008
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when you have your boyfriend or girlfriend wrapped round your little finger.
i told him walk the ten miles to my house and he did because he is "on lock"
by deb July 1, 2003
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A piece of shit that is painful and holding back true calamity that needs to be released.
Man i have a locke that just aint going away, tis painful.
by cesar romero August 1, 2009
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