Panel 1: (A thumbs-up and a thumbs-down)
DOs & DON’Ts SUGGESTED BY THAT DEAF GUY: BE DEAF WISE!

Panel 2: DO USE A GENTLE TAP TO GET A DEAF PERSON’S ATTENTION.
(A friendly female barista is behind Desmond, gently tapping his shoulder; Desmond is sitting at a table, typing on his laptop, turning his head to look at the barista with a smile)

Panel 3: DON’T SUDDENLY GRAB A DEAF PERSON’S SHOULDER!
(An unfriendly male barista is behind Desmond, roughly grabbing his shoulder; Desmond is at a table, with a shocked look on his face)