I'm doing some keep fit for my fellow lady and gentleman #Cats.
This one is quite advanced but you can work towards it. First, get comfy. Then consider washing your bottom, put one (only one) leg behind you ear, just tuck it behind and hold that position.
We'll start with that.
Photos of your efforts will win points.
These poses need spiffy names. What about “butt wash leg tuck”? Oooorrr maybe just Upward Leg Tuck?