A lady goes in to take a tennis lesson

A lady goes in to take a tennis lesson, and the instructor notices she is using the wrong grip.

After several failed attempts to correct her, he finally says

“OK, just grip it like you do your husband’s member”.

After that, she immediately rips a couple of top spin winners down the line.

The instructor says, “Wow that’s great. Now just try taking the racket out of your mouth:’