What are the incidents that seem to have the smallest consequences, but end up affecting you long term?

Once when I was in middle school, I went on a field trip to the Florida keys. It was fun, I was sick and wasn't feeling well, and it was the last day there. We (the students from my school who's parents would pay the over-$1000 fee, including mine) were the last people there, including the camp staff. The complex was outdoors, as well as the shower house. So I go up with one of my friends, and he says "we should take a nude shower" (keep in mind that these are outdoors, the sides and front of the showers are covered but the backs aren't). So me, being all cool, go through with it. I thought nobody would see, because all the other schools left. So lo and behold, right as I'm pulling the shorts up, a camp counselor comes up to me and starts yelling at me. He gets my info (and my friends) and leaves. So we get on the bus for the long drive home, and about an hour later we stop at Wendy's. Then the teacher running the field trip talks to me and tells me I should tell my parents. I text them and we forget about it. This was over spring break. School gets back in, Monday is fine, then Tuesday I get called up. File an incident report. Parents go in and I almost get expelled. They work it down to a suspension, and the school is banned from the sea camp.

TL;DR: Took a pantsless shower outside at a field trip in middle school (sides and front of the showers are covered), and after a delay of a couple weeks I almost get expelled.