I must have been about 12 at the time and my friends and I were playing basketball as we did every day. This day however would turn out a little different as it provided one of the funniest moments I can remember. We were in the middle of a game when one of the older kids who did not usually hang out with us had a friend over. This friend saw we were playing basketball so they came over to join our game.
Now we were very competitive and followed the rules of the game very closely. This kid who we did not know did not really play as much so his skills were not quite up to par. He would dribble, pick up the ball, and then start dribbling again, which would be traveling, but since it was obvious he did not play much, we let it slide. This kid had a quick wit about him and was continuously saying funny things, mostly commentary type riffs and trash talk style jabs.
Now we had one kid in our group who was a little bit of a jerk at times. We hung out with him, but let's just say he was not the most well liked kid. After about 10 minutes of playing and seeing the new kid repeatedly commit traveling violations, this friend of ours finally calls him out on it by saying, "You travel a lot!"
Then without missing a beat, this kid comes back with, "So did your mom when she had you!" We busted out laughing! It wasn't quite clear why it was so funny, but it just worked, and the more you thought about it, the funnier it became. It was a perfect come back and there was no one who deserved it more than this kid so it made it that much better. We laughed for about 5 minutes straight all while trying to continue playing the game. The kid had some more good lines that day, but this is the one that really stuck.
To this day, I consider it to be one of the best come back lines that can be applied to almost any situation. Even if it seems like it would not make sense, the line is always funny and pretty much always works if you think about it enough. We never saw that kid again, but he certainly made a lasting impression with his jokes and come backs that day.