I can’t remember if it was in primary school or secondary school, when we were on the football/rugby field, and when sledging was de rigeuer but mostly harmless.
Things like “Your momma must be ugly cos you ugly too” were tossed back and forth. And it took a real sporting talent to come up with a killer taunt/sledge. (The all-time prize goes to Zimbabwean cricketer Eddo Brandes, who when the legendary Australian bowler Glenn McGrath inquired of him with full intent to insult, “Why are you so fat, you fat cunt?”, very quickly but calmly came back with, “Because every time I fuck your wife, she gives me a biscuit”.)
But on our humbler, less talented playing fields, the winner as far as I remember, was this response to a typical “Yo Momma” taunt that sent every player from either team rolling on the grass:
“You… you… you… Your Mother No Nipple!”
OK, I was only reminded of that because of this mildly interesting post about a Pro-Wrestling poster in Florida which has had the nipples of the wrestlers photoshopped out because of a misinterpretation of a law in that state which prohibits the display of (female) nipples.