This just proves it...Bengals fans are D-bags.  Not like you didn't already know.

Nick Lachey was escorted out of the Bengals/Chargers game in San Diego on Sunday after getting into a fight with a Chargers fan in the seats.  In the above video, you see Nick being escorted away from his seat.

In the below video, you can see the actual fight:

According to muliple sources involved with the incident, Nick choked out a Chargers fan in a Igor Olshansky jersey & called the guy's wife a f***ing b**ch.

This is how it went down...

TMZ talked to the Chargers fan & the guy claims that Nick made one particularly offensive comment about Olshansky that crossed the line.  The fan's wife shot back to Nick with, "Well, he lasted longer than your boy band."  That's when the fight exploded and Nick jumped out of his seat attaching the Chargers fan.

Nick brag tweeted about the incident:

But then back peddles & says that he was NOT kicked out of the stadium...

Yea.  The released videos aren't really helping that argument. 
TMZ reports that the Chargers fan is planning on filing a police report.
This is the statement that came from Nick's rep:
"This is a gross misrepresentation of what happened. It was nothing but a spirited debate between fans of opposing teams. At no point did Nick say anything derogatory to the man's wife and anything to suggest the contrary is simply untrue."
photo source:  Nick Lachey twitter