I'm a well read grad student who's bluntly honest about all things, although I try to be most honest about myself.
See this GIF? Too large. So I copied it from another post that I'd written, pasted it, and boom. If you can get to someplace where you can copy and paste the image, you're set.
http://www181.lunapic.com/editor/?action=copy-clip
Try that site. Load an image, use your mouse to capture the picture, hit command+c, or whatever it is on a PC, and then command+v.
Yuuuup. Used this Quill GIF on lunapic, uploaded it from my computer to the site, then copied and pasted it in.
YAY!
ETA: they won't allow you to direct link at lunapic. Grrr.
Gonna look for another workaround for now.