What is Dumbwhiteguy?
Everyone who uses stupid shitty slang that makes them sound like idiots.
Dumbwhiteguy1: What-what? Keep it gangsta! Step off, you got served. Homie, don't be a playa hata! Fo shizzle! Etc.
Dumbwhiteguy2: Man, that white guy is the biz-omb!