Off the wall opponent tactics

I recently crossed paths with a guy who literally and almost intentionally killed his queen with in 3 moves?  Perplexing me to say the least to where I almost didn't want to take it thinking it was a trap, but with well thought out planning I seen nothing of the sort other than a very stupid move, and I don't like saying it but if it's a duck then it's a duck. Other than Fools mate what's the most foolish move you've seen?

I've seen plenty of bad moves that I've played, but this is as good as I can think of for a move by another person. It isn't one totally insane move but three insufficiently calculated ones that lead to an early mate.

silly mistake

Easiest win I've seen.

1...e4... 2. ..1-0

When it comes to deciding who wins the prize for "the dumbest move ever made", there are a number of factors to consider. The caliber of the players is important. A dumb move made by a super-GM and World Championship contender must be regarded as dumber than the same dumb move made by a 1200 player. A dumb move that loses you a tournament that everyone thought you had already wrapped up gets extra "bozo" points.

With that in mind, here is my submission for the dumbest move ever made:

Before you look at the game, allow me to set the stage:

GM Ivkov was really on a roll, playing the best chess of his whole life. Earlier that same year (1965) he had qualified as one of the eight Candidates to play off for the World Championship match against Petrosian; and while he had been eliminated in the quarter-finals by Larsen (who was then beaten by Tal in the semi-finals, who then lost to Spassky in the finals) everyone agreed that Ivkov was now a man to watch.

A few months later, in Havana, GM Ivkov was sweeping all before him. Beating both Bobby Fischer and former world champion Smyslov as well as a host of lesser GMs and IMs, he was leading the tournament by a point and a half with only two rounds to go. He was even paired to play the tail-ender, a local Cuban player who had amassed only two wins in his past 17 games.

Then this happened:

https://www.chessgames.com/perl/chessgame?gid=1063717

As a post-script... this game shattered Ivkov's self confidence. He lost the next game, too, and Smyslov edged past him and won the tournament. For the rest of his chess career, Ivkov never really recovered his form, and never reached the Candidates again.