Homework (if gif doesn't play, open it externally)

I'm not entirely sure which scene it is. This person has linked the actress as well, but the GIF is not from that shoot, that's a different couch. According to TinEye, this GIF originally propagated (without text) as tumblr_nwpfzrgSNT1s5y4eao1_500.gif, which has died to the great tumblr purge and link rot. Thankfully google found this version of the GIF without text. Unfortunately, the rest of the scene is still missing.

(If any Porn Historian is looking for the original GIF and can't find it, shoot me a DM, I'll probably still have it locally downloaded).