Senior year in HS. Wrestling at 185. District meet. My teammate (placed 2nd at state the following year) wrestling at 167 gets a guy up in the air on a takedown and slams him (accidentally) to the mat. Yes, it was a slam. The kid was fine. Just as he starts to get up, his coach yells out (loud enough for he whole gym to hear) "Stay down." The coach runs out to check on his kid. Sure enough he is "injured" so the kid wins and my teammate loses on a DQ for the move.
Later that evening in the finals, I am wrestling a kid from that same school in the 3/4 match. Sure enough their kid picks me up and slams me to the mat (again, unintentionally). Just as I hit the mat, the whole gym goes quiet. Then, everyone in the gym all yelled at the same time "stay down!" I busted out laughing. I got up and looked at their coach (who was hiding behind his hands) and yelled "Nope coach, not stooping to your level." Everyone in the gym heard it and gave me a standing ovation. The ref looked at me and couldn't stop laughing. He says I should hit you with unsportsmanlike conduct for talking to the coach, but he deserved it. I did manage to get the decision.