Stupid driver tricks...

Which is more annoying? The driver who gets on the freeway but goes no faster than 40 mph in the slow lane because he's getting off at the next exit... OR... the driver who tips back and drinks out of a 64 ounce big gulp cup (without the lid or a straw) and has to slam on the brakes when she does so because she can't see in front of her..... you decide....