If you're in possession of a working internet connection and basic human sentience, you're probably aware that HBO's Game of Thrones is coming to a close after its upcoming eighth season. The cast can shave off their castle beards and wipe away all that Flea Bottom grime, but the end of quite possibly the last water cooler TV show ever is all anyone's going to want to ask about for a good, long while. So it makes sense that Kit Harington's Saturday Night Live monologue dispensed with the pleasantries and got straight to the important …