the stupidest time i died is when i was the octopus as mrgame&watch's final smash and went over the edge to hit another player but missed and he wouldn't go up so i fell and died. it also costed me the match
You probably fell off the edge with Octopus because it can't fly, it can only double jump.
I tend to nerf myself alot. The dumbest (and possibly the greatest moment in Smash for me ever) was when I used Link's boomerang to edgeguard Kirby who flew back at me and back-aired me to death.