It seems to me somehow kinda like that way some little kids sit on the floor/ground
, with their legs bent back at their sides (which is apparently a yoga position, this googling for an image teaches me), and here it is for you to see--- Humphrey's funny way of sitting, captured by telephone:
I think maybe that lower left one's the best shot, overall (see it bigger here
). But the top one sorta shows off the goofiness.