This is a very old sketch by American comedians, Abbot and Costello. It has been referenced in Family Guy, the Simpsons and hundreds of other comedy shows over the years.
The basic idea is that there are a variety of baseball players with unusual names (“Who”, “What”, “I Don’t Know”, and so on) and Lou Costello is trying to find out the names of the players. Bud Abbot tells him the names but Lou gets increasingly confused when the names seem to be questions back to him.
It takes a while to get going but this is a classic act of wordplay.
Enjoy your holidays.