In most cases, a corndog is a joint rolled with a small (or large depending on your taste and tolerance) amount of cocaine in it. Supposed to give you the effects of both without the speedy high of snorting. Not for the beginner.
"Yo bro you fixin to get all bent sideways?"
"Yea sure im down ill roll up a corndog."
Corndog. (Noun) Used to describe someone, usually a lamewannabe tuff guy/gangster. They talk the talk, dress the part,always seeking attention in large groups. Telling stories of how they whooped so & so. Been doing drive by's since they were 9yrs old. Got a whole buncha tattoos, face tattoos especially. Teardrops, other words or phrases representing their "gang" or "hood". It could also be a gym going guy, buffed out, but can't scrap a lick. They're referred to as a Corndog because, you can change your appearance, but underneath the batter, no matter how thick it is, the Corndog is still just a Weenie in disguise.
Buff don't make you tuff, neither do your face tattoos. I know you're just a Corndog bud, a straight up Weenie In Disguise.