Luckily it was lidded, so the damage was minimal. I'll leave my keyboard upside-down at the end of the day, but I reckon it'll have dried by then. It sort of went diagonally over the G and H keys, made a quick stop off at O and P with a side trip to [ and ] before checking under Page Up on its way to splatter both of my monitors simultaneously.
Clever coffee. Well travelled, too.