Tumbles
When a girl or woman has spent way to many lonely nights on tumblr. Alone. And she has taken on tumblr as part of her personality.
Guy 1: Hey man look at that chick over there! She's got a mean case of the tumbles.

Guy 2: Hey chick come over here!

Chick: Oh my god guys, did you see that (insert band name here) in concert?! They are just sooo perf, I can't!!! asdfjkl!

Guy 2: Oh god...