Al's underwear

One evening AL, thinking he was being funny, said to JAN 'Perhaps we should start washing your clothes in Slim Fast. Maybe it would take a few inches off of your butt!' Jan was not amused, and decided that she simply couldn't let such a comment go unrewarded. The next morning Al took a pair of underwear out of his drawer. 'What the Heck is this??' he said to himself as a little 'dust' cloud appeared when he shook them out.
'Jan,' he hollered into the bathroom, 'why did you put talcum powder in my underwear?'
She replied ...'It's not talcum powder......It's 'Miracle Grow'