Wow yeah my story is pretty similar. The table was: Daretti (me), Narset, Nekusar, Roon, Zur (my homies) and a Riku player (Salty LGS regular).

Basically after a long grueling hour and a half or every threat being answered and a dozen or so board wipes, the Narset player hard casts an [[Omniscience]]. At this point most of the table just wanted out, either to split into a new pod or to just go home. So the Riku player tries to [[Counterspell]] the Omniscience, I respond with the only counter I have, [[Red Elemental Blast]], and now it's war. At this point the Riku player starts screaming at me for how bad my threat assessment is, so the Zur player feeling bad [[Swan song]]s my REB to keep things going, but at this point more people are on the side of me and Narset, so the Roon and Nekusar jump in to try and finish the counter war, [[Glen Elendra Archmage]] gets used by Roon to stop the swan song, but Riku responds with a [[Stifle]], and lastly the Nekusar player plays a [[Flusterstorm]] which wins out because at this point no one had any counters or mana left.

So after the dust settles we clear the stack and the Omniscience resolves. So the Riku player does the only logical thing and starts yelling at the top of their lungs that we are terrible players and that we should never play Magic again. The Riku throws their deck and storms out of the store. So the rest of us were like "well that was weird, but GG Narset, the game had to end eventually". We picked up the Riku players deck and playmat and handed it to the store owner when we left. It was the saltiest I have ever seen someone in person.