Completly FREAKIN WILD crap to do on the last day of summer!?!?

summers ending!:( me and my two friends really wanna do some really crazy things on the last day of summer so that were happy with going back to school knowing me we spent the last day well. were 12 year old girls but we'll do the most stupidest crap and do anything to have fun. we wanna do all of this in the town he live in wheres theres people all over and tons of shopping centers. GIVE US SOME REALLY WILD CRAP TO DO!!! pleease and thankk youu=)