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When one puts another person's leg in between his own legs and clenches firmly. This is action is normally executed while friends are cuddling.
Jack:Hey, I am sad.
Frank: I know how to cheer you up! I will borrow your leg!
(Frank takes Jack's leg and places it firmly between his own legs)
Jack:Yay!!! I love when we borrow leg!
by Leggythearmborrower February 02, 2011
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