We buy food for each other too, but we have out t-tetris thing ( read here : http://alexandral.livejournal.com/197358.html#cutid1 ) where we monitor how much each of us bought, as well as how many cups of tea we make for each other. And it would have been a total no-no to do it for someone who is your boss/ in senior position.

You see, Topher's exchange with the female tech felt a bit off for me but I might read too much into it. I will give them another chance.