I remember my happiest memories to be in school, surrounded by careless, daring, funny, and oft-swearing people. In classes, but not only in them.
I remember I was happy when I was running track and cross-country. A bunch of guys and girls running on the side of the road on a sunny day at a decent pace: chasing cars and talking. We didn't give two shits about money or things, these things seemed to have fatten us, make us less free. Even shirts were too much!
Yes, social situations around physical activities were peaks of my happiness.