LOL could you believe I actually DIDN'T think of anything sinful??? Honestly… cartwheel is about motion… you can't stop and insert interesting activity in the middle :D Or else it's not a cartwheel anymore.
(Just look at us… semi-public and all… for shame.)
Well, stop the cartwheel at the middle and just keep standing on your hands and indeed, I think that'll lead to something that was on the list… (Which I'm not looking at either…)