public dares & challenges
And do the actions that go with it.
Joust, fight, duel, what ever you so please, just make it sound epic!
cheer about something that you're currently doing in a public place. DON'T FORGET THE SPIRIT FINGERS!
Get kicked off public transportation in a creative way. Off a subway/bus/trolly, just keep it legal!
the toilet rim the thing you sit on, and it doesnt matter what on the urinal
In a public place (like a shopping center) yell at oncoming people "YOU SHALL NOT PASS!" just like Gandalf in Lord of The Rings. For any of you who need a good reference: http://www.youtube.com/watch?v=Z1cT_5-4PJU
For those that don't know, 'pantsing' is pulling down someones pants when they don't expect it. For this prank, the more people that see this, the better obviously. You can also tabletop your friend after for a little extra flare.
get a mankini (banana hammock) and do some jogging in public