Completely killing it at work. Getting shit done. This term is specifically used a lot in the tech/design/creative field. Can be used almost interchangeably with Charlie Sheen-esque "WINNING!" but more about getting things accomplished. Almost could be similar context of "pwning" but less about crushing the competition and more about doing great work.

Fun lunch. Eating not just for sustenance, but in such a way as to really enjoy your mealtime.