What is most offensive think you have done?
my buddy and i (when we were about 13 or 14) used to do some weird crap at night during sleep overs.
for instance:
we would take some of his moms tampons and make this blood like concoction and go out and drop the tampon on someones doorstep and apply the blood concoction onto it, and we would spell out
bloody mary was here  down the walkway.
one of many such grotesque examples of imature activities, for which i remain proud to this day.
another time in vegas, in my early twenties, we called the consierge and ordered a couple of midget strippers for a friends bachelor party.