Strange sleeping habits

My son (who is a quirky four year old) has decided that he doesn't want to sleep in his bed anymore. He doesn't want to sleep in our bed either. He sleeps on the floor. Our hard, cement-tiled floor. EVERY NIGHT. I don't know how he does it b/c the floor is incredibly uncomfortable, but hey, like I said, he's four years old. I try to remember to put down a blanket for him, but sometimes I forget. Last night, I caught him sleeping like this:


Not really sure why he sleeps with his feet up in the air, but I guess it works for him. Hubby says he used to sleep on the floor when he was little, so maybe it's hereditary.

And here's another one (I also think this is hereditary because both his father and his abuela sleep with pillows over their heads):


And in case you're wondering why he's not sleeping on the floor, it's because we were in a hotel, and this was a sleeper sofa. I guess the rules are different when you're on vacation.