Hm...maybe it was a night of many, many drinks, kissing a girl and then meeting a guy and talking and kissing him all night, then telling him to meet me the next week so we could go on vacation together. We both showed up the next week at the appointed time, and then went on our first date, which ended up taking place about six hours away and lasted for five days. I knew that it might be really, really stupid to take off with a guy I didn't know (yet) but it ended up being a VERY good thing.
Or it could involve an arrest and subsequent conviction (just a misdemeanor, though).
It's funny (but not funny ha ha) to look back on the things I did when I was in college, many of which were not legal. I am so lucky that I only got in trouble the once, because I tell you, it could have been much worse. Fun times, true, but you really have to be careful!