Put my controller down doing LASO on ODST on the final mission, because I was riding on the back of a mongoose on the home straight... I shot my team mates on accident, who were riding the Mongoose next to us
what to pick I have done several stupid things in video games but the dumbest i would have to say is tried a rocket jump in borderlands 2 with the Norfleet rocket launcher on the final 5% of Teramorphus the invincable fight killed the entire team i was running with ^ ^
On World of Tanks I was in a low tier American medium tank. Saw a TOG go over a rock and thought to myself "I can do that too!" I got my tank stuck on the rock on my way down, getting caught at a perfect 45 degree angle. It was so bad that the enemy team ignored me and just capped base.