More baffling municipal codes

By Ransom Riggs

I ran across this sign in a parking garage yesterday, and it really got me thinking ... what else would I do in a parking garage? Then again, there must be some really fun stuff happening in parking garages (that has nothing to do with parking cars) if they bothered to enact municipal code 3.36.280 specifically to ban it. But for the life of me, I don't know what. (I feel so out of the loop.) Maybe you guys can help me out here -- what the heck are they talking about?