honestly surprised you havent used any Monster Musume gifs.
I'm surprised myself I love Ms. Smith, but she's mostly static and not animated, and many of the scenes with the monster girls take up the whole screen and it's kind of hard to use for an avatar or sig
It's from the 7th episode of Majimoji Rurumo, a beach episode, it is a new anime this season (SUmmer 2014), and while it's not an overly ecchi anime, it's quite a charming series overall