Pointless discussion....

If you were drunk, how could you get on the horse?
For that matter, wouldn't the saloon owner be partially at fault for giving you back your reins?

That post made me remember the game Red Dead Redemption. You could get drunk in that game, stagger back to your horse and face plant the ground if you failed to climb up onto the horse.

One time while I was playing, the character kept falling over instead of getting on the horse... So I did the only logical thing... I punched out the horse and then skinned it with a knife right in the middle of the town.