You might not want to get San Francisco 49ers coach Mike Singletary and Atlanta Falcons coach Mike Smith at the same dinner table.

Singletary didn't shake Smith's hand after the Falcons' 16-14 victory over the 49ers Sunday at the Georgia Dome, according to a league source.

Smith went to the center of the field to look for Singletary and never saw him. That's because Singletary didn't show.

Yes, it was a tough loss. Yes, his team is now 0-4 and Singletary's job is on the line. But the rule is -- unless, of course you're Bill Belichick and you write your own rules -- is you always shake the winning coach's hand.

Whether it's an outdated tradition or not, it's the way it is. Not shaking Smith's hand speaks volumes about Singletary.

Is there is a reason? Did he think Smith ran it up when the Falcons blew out the 49ers last year at their place?

We'll find out. But, for now, it looks like a classless act.