@matigo The coffee, certainly. The homework, also.
It was a short one really — write a summary of a 550-word document. It was supposed to be group work because this professor believes that you learn best when working in a group (he's wrong — but I do come up with some brilliant insults for those layabouts), but in the exam it's obviously going to be an individual task.
So I just did the whole thing and sent it to them for approval. It's not graded, so it doesn't particularly matter who gets the credit.