WATCH: Bill Belichick & David Letterman Talk Deflategate

New England Patriots head coach Bill Belichick made an appearance on The Late Show With David Letterman on Wednesday. (Getty)

We know Patriots head coach Bill Belichick can come off as grumpy on the field. But off it, the guy has a pretty good sense of humor.

Check out this clip of the Super Bowl-winning coach and David Letterman discussing Deflategate on Wednesday’s Late Show:

Letterman is an Indianapolis native and a Colts fan, so he likely had some interest in Deflategate.

Belichick and his Patriots pasted Letterman’s Colts 45-7 in the AFC Championship Game, 2 weeks before winning the Super Bowl 28-24 over Seattle.

Belichick definitely had more fun discussing Deflategate with Letterman than he did with reporters at the Super Bowl.