Help finding specific speedrunning video

Wanted to show a friend a speedrunning video I saw a while back, but cannot remember it enough to find it on YouTube after tons of searching.

I'm fairly certain it was for a Mario Kart game, but I could be wrong. The main thing in the video, or at least a big part, was that a random chatter sends the streaming runner a completely new skip/strat. Streamer doesn't believe them at first, but checks anyway, and it ends up being legit.

I have memory issues and it's bugging the hell out of me that I can't find this video I know I've seen before. Any help is much appreciated.