Wolfgang slips off at several occasions, mostly to get coffee, because he is tired (he is always tired) and the caffeine... well, it's not waking him up but it is keeping him from falling asleep. Maybe that's actually all the sugar he dumps into it to make it palatable.

At one point he heads outside for a cigarette because he comes from a time and place where smoking indoors is rude. He's sitting, knees up to his chest, hand-rolled cigarette in hand, and eyeing a smallish sky jellyfish as it floats serenely over the building. It's high enough off the ground to not be a threat, it's just kind of eerie watching them, and he, for one, is not going to kill something that isn't hurting anyone.