Today's
Questionable Content suggested the existence of romance novels (aka "girl porn") wherein we have temporal crossovers between 10th Century Vikings and modern day Navy SEALs.
It couldn't be real, could it? Oh,
they're real. Honestly, I couldn't sit there and read the descriptions for too long. They're that ridiculous. The one I linked was the funniest one in there, but I'm certain there are some more hilarious ones.