Do you blow smoke rings?

[Mr. Ed]

Never tried the tapping technique.

The best way I can describe how to do it is just say the letter "O" a bunch of times and make your mouth into the shape of when you say "O" and blow some air out. Basically, pucker up your lips pretty tightly, but leave a small hole for the smoke to escape.

As far as the double rings go, that's beyond me.