What's the weirdest thing that has happened to you while playing a video game

My weirdest thing was when I first started playing Mario kart 7 (it came downloaded when I bought the system) then I started up the game and the first thing I saw was an untextured gray void with Mario karts driving around it there was a small indent where the track would be and the camera was moving around like it was the replay camera also the title screen for the game hadn't launched and I felt like I was viewing a tutorial and then after that I don't remember anything until completing the mushroom cup btw this is true and I'm seriously not making this up I wonder if my new 2ds XL is hacked or what but it has never happened again

Accidentally doing an infinite falling glitch in Mario Odyssey

It was the one where you clip out of bounds in the City Hall of Metro Kingdom, but I didn't know it existed and did it anyway lol