Wayne Gretzky now knows of a special place where boys and girls can all be queens every single day ... 'cause the Great One got a lesson in Chappell Roan's hit song, "Pink Pony Club" on live TV -- thanks to TNT co-host Paul Bissonnette.
Biz's session took place after the Edmonton Oilers' overtime win over the Florida Panthers in Game 1 of the Stanley Cup Final ... when the former NHLer started talking about how the popular tune has become an unofficial anthem for the Canadian squad.
The Great One didn't want to be left out -- so he started asking questions.