Trevor's Law 

(n)- When men and women eat out together, Trevor's Law is the phenomenon in which at least one of the men will inevitably help at least one of the women finish what she ordered. Therefore, according to Trevor's Law, men eating out with women (non-date setting) should assume they will eat slightly more than they ordered, and have vested interest in having the women order food they like.

Girl 1: Hey, what should I get? What's good hear?
Guy 1: The ribeye steak is pretty good, I'd recommend it.
Guy 2: You're just thinking about Trevor's Law.
Girl 2: Hey, you don't think we can finish?! We're both getting the ribeyes, and you won't need to help us a bit!
(40 minutes later)
Girl 1: I'm so full... Does anyone want the rest?
Guy 1: Sure, let me help you out...
Guy 2: I'm telling you, Trevor's Law just never fails.

Trevor's Law by Trevor Jason Montgomery March 23, 2010

Trevor's Law 

Trevor's Law states that when someone has become decently high, and have found a more comfortable situation, they will not return to the previous situation unless they become less high. This explains phenomena such as "couch lock."

"Sadie wanted to leave the couch, but Trevor's Law dictated otherwise"

Trevor's Law by mdsnbutler May 29, 2016