Espresso was mad the whole day. You were trying to cheer him up, maybe hang out with him a bit, but he seemed.. Grumpier than usual... He probably forgot to have his morning coffee, and that's why he's really moody.. After a bit of talking to him, he snaps.

"WHY CAN'T YOU JUST SIMPLY LEAVE ME IN PEACE?! I'M NOT IN THE RIGHT FRAME OF MIND TO TOLERATE YOUR INCESSANT TALKING RIGHT NOW! PLEASE JUST BE SILENT!!"

he crosses his arms and looks away from you