noun - used to describe a southerner. ofcourse 100% of southern people are mentally retarded, inbred, trailor trash.
looking at an uneducated, no-chinned, bucktooth loser at a monster truck rally, (or rodeo, tractor-pull, nascar race, demolition derby, ten yr old fiance's babyshower, trailor park convention, shopping for clothes/furniture at the local dump), you say:
"hey, look at that shlanktooth over there"
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.