Just don't do it after drinking a couple beers. Had a guy come in the shop 2 years back that wanted me to fix his split cause as he said "I spent a month figuring out the mathematics, where I was going to cut it, and had it all set. Then I went and drank a 12 pack and now I have one side that's bigger than the other". Yeah not exactly something you can fix.
What a fucking moron. He spent a month figuring out the mathematics on how to simply cut a straight line bisecting a symmetrical object? That's not exactly a tough task.