Sitting through 3 hours of listening to other students give speeches (entirely in Japanese, and most of them were 2nd and 4th years, while I'm just a 1st year, so I couldn't understand the vast majority of what was being said), then surviving several hours more of mingling and making polite conversation with a bunch of random Japanese businessmen, most of whom didn't speak any English.
I also seem to have accidentally agreed to give some old Japanese lady English lessons. I'm not entirely sure how that happened.