2. The mid-day break from the work place (usually 60 minutes), though sometimes used for work-related social interactions.
3. (out to ~) crazy
2. I'm going on lunch break right now. Let's do lunch tomorrow and discuss this further.
3. My boss is really out to lunch. No, I mean figuratively -- she's nuts.
Kylie: That's right
Kosta: no, when
Melissa: at lunchtime
etc etc etc