Start with a clean grill. Keep it clean by brushing with a wire brush after preheating and again after cooking. Make sure to oil your grates and your food before putting it on the grill to keep it from sticking.
I never worry about people not taking my work seriously as a result of the humor. In the end the comic's best trick is the illusion that comedy is effortless. That people imagine what he's doing is easy is an occupational hazard.