Well, I always chalked this phenomenon to one being too wasted to really give a shit what somebody looks like, but apparently, the brits don't think so.
"A formula rating of less than one means no effect. Between one and 50 the person you would normally find unattractive appears less "visually offensive".
Non-appealing people become suddenly attractive between 51 and 100. At more than 100, someone not considered attractive looks like a super model. "
Can this formula be applied to other alcohol induced activities? For example a score of one and 50, the 200 foot tree in some strangers' backyard probably shouldn't be scaled at 4am, but between 51 and 100, a strange mission from god appears to command you to climb said tree, and at more than 100, you no longer need to climb the tree because you can simply fly up to the top.
Thanks to Roly for this info.