(Ignore him and take the higher ground) "As I was saying..."
R&R: Trying to be "bigger than" the Sniper by ignoring the behavior is the most common reaction to Sniping in a public setting.
(An eerie silence hangs in the room. People shift uncomfortably. Someone clears their throat and it seems quite loud against the silence. Rickles is grinning at you.)
YOU: As I was saying ... after a careful examination of the facts, it is my belief that ...
RICKLES: (To the person next to him) Some people don't have much to say, the only trouble is you have to wait so long to find out!
R&R: Patience, patience, breath ....