For those of you who don’t play Left 4 Dead, you will have to take my word for it that this is a joke :).
The costume I wore to the party this year almost beats my record for lazy costumes. I had a bag full of old costumes, you see… so I laid them all out, and just changed into and out of various costume pieces throughout the night. I greeted people as Batman, then changed into the Grim Reaper, followed that up with a werewolf… it was fun confusing people for a while, but after about an hour I gave up.
Definitely second place for laziness though. A couple years ago I wore a sticker that said “Hello, my name is Steve”.