Since deleted (or scrubbed rather) Reddit user Sendeyed

The scrubbing makes things interesting in the source department, especially since the Wayback Machine got blocked by Reddit’s age verification page, so I don’t have a primary source to point to. That said, two Reddit scraping pages ([1], [2]) indicate that the gif was posted to RealGirls with the title getting naked while my hot chocolate is in the microwave :) by the user sendeyed. Which can be found here, unfortunately with the video deleted there’s not much to match. That said, I did find a Mega archive that contains the gif and everything seems to match up well enough for me to call this one good.