What is Tweaner?
1.
Someone who is constantly in between being classified as fat or regular sized. One day these people look relatively slender, and the next day they look heavy.
Oprah, Rachel Ray, Brittany Spears(2007)
"Do you see that tweaner at the other side of the bar? I can't tell if she's fat or thin from this angle."
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1.
This is when a naked guy is barely backfloating so that only his erect penis is clearly visible above the water.
Stew was playing subma..