Shrunken head tattoo
Lol... Every woman in my family sits with a smile but will know your back to death in an instant then sit back down and smile as if nothing ever happened. I'm almost sure this t-shirt was created to warn others of the women on mother's side of the family. Golly jeee whiz, they're viscous, esp behind your back! A smile on their front means a knife is coming to your back!