Man oh man.. I can't remember any good ones right now but I do remember a pretty good one even though its pretty bad lol
Me and my buddies we used to go on 'heists' as we'd call them, and see waht kind of rediculous things we could pull off in stores. This included huffing all their whipped cream, ditching shitty shoes and putting on good ones, then putting sunglasses from the store on and walking out. Taking whole pizzas, Once my buddys dad gave him 100 dollars which was a HUGE deal back then to go grocery shopping. So we went grocery shopping, then we walked out of the store with the shopping cart. Same thing we did for school supplies..
I remember doing crazy things at drive thru's too, mooning them, grabbing their wrist and driving away pulling them half way out the window. Locking eye contact, SCREAMING as loud as you could(the driver), jesus.. Theres a lot more we did there.. We also liked going through backwards a lot!