By Stalone, the maine coon
Stalone, as many other cats besides him, loves to lay in various spine challenging poses. Or at least that is what I think every time I look at him doing something like following:
Back paw fists are optional, but still are so cute.
By the way, this ledge is on a second floor level, along the main hallway, with no rails, or such... Cats love it, of course...