Widen your eyes and inhale audibly with your mouth open.
Raise both hands and karate-chop them up and down with nearly every word you speak, even before you speak.
Say the first word of the sentence.
Pause, frown and mostly shut one eye closed. Point at the audience, wagging the finger ever so slightly.
Say the rest of the sentence as fast as you can and then the first half of the second sentence, going from pointing to karate-chopping again.
Pause, look around without moving your head and repeat as long as necessary.