Welcome to latelatebloomer's class on The South Philly "YO!"

Forget about speaking from your diaphragm. That's not deep enough. It should start at the soles of your feet and burst upward explosively.
When practiced sufficiently, it can stop every living creature within 200 yds, dent sheet metal, and even get the bartender's attention.

Now ride your bike up the steps of the Philadelphia Art Museum and do a little dance.