Gets drunk, climbs buildings

As you suggest, bounding up buildings is probably not the safest idea, particularly when you've had a few drinks. So, short of doing your drinking in the middle of a nice, flat field, two ideas you might consider come to mind: (1) drink with trusted friends who will keep an eye on you, and (2) take a look at your drinking habits with an eye on what motivates your behavior. For safety's sake, you may want to take your friends with you on drinking occasions, and let them know ahead of time about your Spiderman tendencies. In addition, it may help to think about how to drink in a lower-risk manner [2] and doing so with friends who would stop you from climbing, rather than ones who would encourage you in the name of high-flying entertainment.