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100% kidding ... but, from now on, when you watch Professional tennis, you will listen for their grunts and will be impressed!!! HAHAHAHA

lol - I'm a kid of the 80ies and perfectly remember the Queen of Grunts Monica Seles. One could think she was literally dying on the court :-D

I don't know if I'd ever go that far... hahaha

On that note ... If you can start swearing like John McEnroe, you might really improve your game.

Haha, you bet!
And I'd most definitely have to start arguing with my instructor (vs. referee) like the Williams sisters do :-D

There's still a lot to learn though...