1.(verb)The sexual act of a women forcefully locking her legs around her partner's waist before he has a chance to pull out therefore inducing pregnancy.

2. Force pregnancy by the female counterpart by securing her legs and feet tightly around her partner leading no escape for him.
1. Danny: Dude whats wrong?

Jesus : (sigh) Remember that girl yesterday?

Danny: Yeah what happened?

Jesus : She did the Pink Thigh Lock on me...Im gonna be a father.

Danny: WTF is a thigh lock?!

Jesus : This bitch decided she was gonna lock her legs before I pulled out, last time I do it without a condom.

Danny: Congratulations!
by The Strudel April 14, 2011
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