Well my lunches jump around, it used to be we got 20 minute paid lunch breaks. Then it switched to where we'd clock out for 20 minutes but spend an hour on lunch. But for almost a year now it's 30 minutes of unpaid lunch. That we spend anywhere from 30-90 minutes on. That and we also make up all our unpaid lunch hours or at least I do.
Anyways on lunch, it's usually with the other guys on my shift (3 others) and we eat and have random conversations about things..cars, women etc. A lot of the time 2 of the guys will play games on their iPhone/pod, and go on youtube and we share videos that we watched that were funny and stuff like that.