How about I think of inappropriate behavior on a high school trip?
Seriously? What are you thinking of doing on this trip?
I will go to a beach party and attend at least seven festivals
That doesn't sound too bad. I think that as long as you follow the rules, it seems like a fun thing to do.
We need at least fifteen girls totally wasted
This is a high school trip! That makes what you're thinking of not only inappropriate, but also illegal. You shouldn't do anything with girls and high school children, as that just doesn't mix well.