look up any word, like timebomb:
 
1.
The female equivalent of a cock block.
I was hitting on that guy, but my girlfriend stepped in and totally box locked me.
by jacaranda December 03, 2006
 
2.
Noun. 1) Dreadlocks of the pubic hair, particularly in females.
Buddha: Dude, I was going to go down on this girl from the U of R but when I got her pants off she had these enormous Bob Marley inspired boxlocks down there.
Chris: Ugggh!
Buddha: Yeah, needless to say it was over right then.
by crackysmokerton May 12, 2004
 
3.
1. To prevent a female friend or associate from getting some action.

2. Any such attempt to prevent a female friend or associate from getting some action.
1. I was going to kiss Tony tonight, but Mara was a total boxlock and kept pulling me away

2. So Lorne's planning on kissing Gina tonight - we've gotta boxlock this and ruin the moment!
by eskeemo February 28, 2008
 
4.
A feeble attempt at a catchphrase with words that neither rhyme nor alliterate.
- That shabby little slag just put the box lock on me!
- Come on, nobody hip says 'box lock' anymore. Why don't you try 'muff cuffs' or 'cunt clamp'?
by Anonymous Cowherd January 25, 2008
 
5.
The female equivalent of a cock block.

I was hitting on that guy, but my girlfriend stepped in and totally box locked me.
by weirdalr0x28 January 25, 2008