I have a room mate who does the same thing as the OP, but his favorite is to do it at 1-2am on friday and saturday when the bars are emptying out. He's a freaking idiot. He's going to hit some poor drunk girl some day and get his head kicked in by her drunk boyfriend, and he would totally deserve it. He aims to make contact with them even if they are just standing on the side of the road. He essentially dive bombs drunk people at night (even in winter). I don't ever ride with him now if I can avoid it.
I'm just waiting until he crashes himself really badly because thats the only way he will learn (He never believes anything anyone else tells him)