Ok, the most reliable way I found is to:
Grab the hand "Holding the mouse button down and move it to the back wall
Then let go of the mouse
At this point you can sometimes, if you do it right, wave and move the hand around without having the mouse button held down.
Now, move it back and forth then quickly swing it in a downward and upward arch into spanky... Sometimes it takes a couple of swings to get it to fly..