1) Texas Hold'Em - burning a card before the flop, especially when pre-flop betting gets huge. Refers to pulling the pin on a grenade, but not throwing it immediately so it explodes a shorter time after throwing it.
2) To start a fight
1) Three guys went all-in, but we had to scrap the hand because Frank zoned out and cooked it before all the betting was done.
2) Some fool mooned Gary, so he chose to cook it right there in front of the bar.
1. An exclusive behind the scenes tour. As in the 'Cook's tour' of a kitchen in which he works.
2. A tour of a culinary facility by a member of the faculty
Note: Not in reference to the travel agent ThomasCook as is commonly mistaken.
It's a dynamic phrase that could be used to say someone's attractive, or if food looks good. It's antonym is "cook it down" which could mean that someone's nasty, shouldn't sport that type of clothing, or if the food isn't as good as you thought.