I find it's inversely proportionate to how much I've had to drink.
BAC = .0 - .15 : Smashes = 3 (including a morning sesh)
BAC = .15 - .25 : Smashes = 1 (though it won't be pretty)
BAC = .25+ : Smashes = 0 (10 minutes of clumsily trying to force it in half-mast before passing out on top of her and mumbling about how good nachos would be right now)
BAC = .0 - .15 : Smashes = 3 (including a morning sesh)
BAC = .15 - .25 : Smashes = 1 (though it won't be pretty)
BAC = .25+ : Smashes = 0 (10 minutes of clumsily trying to force it in half-mast before passing out on top of her and mumbling about how good nachos would be right now)