smhのようなどんな単語でも探してください。
 
1.
When you find out that a girl/guy you are dating is into something really cool and unexpected so you must make them your gf/bf.
Guy 1: "So this girl I scored wants to go see Iron Man 2 and go shooting!"

Guy 2: "Dude!! Lock it down!!"
RedandGreenによって 2010年05月02日(日)
 
2.
to finalize a decision or plan
Let's make sure Greg's cool with tonight before we lock it down.
lottanyxによって 2010年02月11日(木)
 
3.
Shut the fuck up and calm the fuck down, please.

Traditionally used on a film set, but also useful for stopping multiple friends, lovers, and strangers from doing stupid, often alcohol-induced things.
"Hey, give me five dollars and we'll grab that mannequin's titties."

"LOCK IT DOWN."
ABlairによって 2008年01月13日(日)