>>43983993No shit?
Fred yells it when he's excited to go do something. The first use of it is when he's being ground down by his shitty job but when the whistle plays to go home he gets excited and happy, full of renewed vigor.
Vesper passionately fucking Kronii is just a side perk, the actual joke is that he's not excited to do things he's expected to do but he is extremely excited to do Kronii.
You fucking retard.