Frat AU headcanons

So my friends came up with this idea- we should write an AU where we are fratboys in a fraternity. So far they wrote a good chunk of the beginning and it's coming along pretty well. I just wanted to ask if anyone has any good headcanons ideas or just activities we can incorporate in general? Maybe even a plot idea. We are six in total and we established one of us (Mike) is gonna be a street racer and we had this idea that we are gonna have intervals at his races which I think is a solid plot idea. So let me give you an example of headcanons I'd like to see. I was scrolling on tumblr and I found this post about a person who went to a corner shop where some frat boys work. They had these special bundles with drinks to mix and one of them had mountain dew in it and another beverage and the bundle was labeled as "mount and dew me". And we decided that two of us (Alex and Max) are gonna do exactly that in our frat universe. So yeah if you have cool, unique ideas like that I'd love to hear them.

Also if there's another subreddit better for this discourse please let me know!!