Never seen one that wasn't hideous.
I'm in two minds about them. My mother has a really big tattoo on her lower back, it takes up her entire lower back and is wicked.
My sister on the other hand has a sterotypical tramp stamp that she found on a porn site and got tattooed on her at 14 by sleeping with the tattooist. So ... I think trampy when I see those smaller lower back tattoos