I really don’t know what it is about my offspring that makes them so comfortable sleeping in these ridiculous foot-dangling positions. Seems like a sign of awesomely strong abs, if you ask me.
It's genetic.
I mean, was he like a thirsty man in the desert…crawling toward the couch with his last ounce of strength? Never to pull himself completely onto its luxurious oasis?
Head-on collision.
Now THAT is putting your feet up.
Naps Happen 
And how cute are his sleepy, stripey buns?
At least he left the cushions on this time…
Honestly, how you don’t have video cameras rigged around your house to catch these naps as they happen is beyond me. I have so much curiosity about the “how”, it pains me.
I need a YouTube video of some of these naps getting all set up.
My kneecaps are aching just looking at him… ah, how I miss the flexibility of youth.