Cumpleaños @ the office

Look at this boy, having his birthday today or at least the celebration. Since I modestly arrived late I came just in time for the food and the wine. As a "sober alcoholic" I just had one glass ..ok, maybe two of the bubbly wine. I could be all over about how nice my hippymentor is but instead I am just going to leave it to the song that best describes him as a person.

The song that characterises his personality the most