Hickies: Not Just For Teens Anymore

The other day I was in a meeting with some women from our production department, and I'll be damned if one of them, a single mother of 4 in her late thirties, wasn't sporting a dark purple hickie on the side of her neck.

As someone who hasn't had a hickie since I was, I dunno, 21, it got me thinking: at what age do you look just plain ridiculous with a hickie? Or is it a proud badge of "I'm Gettin' Some" that should be displayed whenever possible?