Yeah, I normally just copy the address from the browser and paste it into the body of the post, but it would only let me put it as text with a link, so I right-clicked on the actual video and chose "copy video URL", but that didn't work either.
https://www.youtube.com/watch?v=aj49TQ7R-28&feature=youtu.be
Funny video though.
DID YOU try the share option?