This usually occurs after after a post-meal smoke.
You have a meal, then go for a ciggarette. Normally after the first puff you experience the "hic-burp".
And the more you try to stop it from occuring, the worse it gets. And don't even try to speak.
Hey man what do you think of the new Star Wars?
Its cool except... (puffs on ciggie).."Hic..."
"Hic-Burp! "...oh, excuse m..."hic.......BURP!"
Person 2 :
Ha. You got the hic-burps!!!