Need ideas for a list of challenges

So basically me and a group of friends compile a list of random challenges, and compete to see who can get the most done throughout the summer. Most of the challenges involve partying/drinking, eating weird shit, athletic related, and just public embarrassment related things. We are currently compiling the list and the competition will start after finals (May sometime). So NS I am looking for some fresh ideas for stuff we can do. We're looking for creative stuff, that will actually be a challenge. We will film most of it so at the end of the summer we'll have a bunch of videos I can share here.

To give you an idea of some of the things we have so far:

-Get a parent to eat a weed cookie/brownie (aware or unaware)
-Shave legs
-Eat 12 eggs within an hour
-Run 10km
-Eat a ghost pepper
-hookup with a girl while chewing gum, transfer it to her mouth without telling her
-8 straight hours of trap music
-be drunk by 11 am (can't have started the night before)
-go streaking

suggestions would be great, make them ruthless, but possible

thanks guys