So I bet you have been hearing of the legendary Juan Deag, which many say will only happen if you hit someone in the face with a Desert Eagle. I would guess you never heard of the legends surrounding this phrase, but this is the only one with UNDENIABLE PROOF of its existence.
One day, at a US national LAN tournament in Phoenix, Arizona in 2013, the hype was through the roof. The iBuyPower team just defeated Cloud9 for a spot in the finals. There was only one catch, the other team was this one Hispanic teenager who never used anything but a Desert Eagle. This was an odd situation. There was an 89.5% chance that iBuyPower would win this match quickly and easily. This Hispanic child only got in because the mediators felt bad for the kid, but he turned out to be one of the best CS:GO players ever, and he proved it with this one match.
It was 14-15 on Dust II, iBuyPower winning by one point. The Hispanic bought one Deagle, two flashes, one Molotov, and one smoke. The Hispanic ran for A short and the magic began. The boy faced the enemy AWPer, locking eyes with him for a split second. It was at that moment, it happened, the child strafed a small bit, stopped, and hit the first of the five in the face, screaming "ONE DEAG!" In the process. Unfortunately the AWPer called out his position and he rotated to B tunnels. The boy plants the bomb at B and guards mid with honor. The first bullet that went out his gun after the plant was a double collateral headshot with a Desert Eagle. However, one of the players made an attempt to defuse and failed miserably after a backstab ended the defuser's life. It was one v Juan situation, with the final man having the AWP that the first death had. Juan, at that moment, had made his move before the final CT could react, Juan Deag got the final headshot we will ever see from the boy ever again. He tied the game. It was unbelievable. A young Hispanic boy who couldn't even speak English defeated the best NA team in the league.
That, children, is why we all call one taps with a Deagle a Juan "flushdoodle" Deag.