(WSCR) Sure, we’ve all told little white lies to make our stories sound better than they truly are.

And that’s exactly what the star of AMC’s Mad Men John Hamm did on the Late Show With David Letterman on Thursday night.

Hamm told of how his baseball-playing days at the University of Texas were thwarted by Roger Clemens. You see, Hamm was a catcher and, as his story goes, it was Clemens’ fastball that ultimately led him to walk away from baseball. The velocity on “The Rocket’s” fastball was just too much for him to handle.

While that makes sense, here’s the problem: As DeadSpin reported, Clemens left the Longhorns in 1983 when he was drafted by the Red Sox. At that time, the now 40-year-old Hamm would have been 12 years old.

According to the report, UT confirmed that Hamm attended school in Austin from 1989 to 1990.

Fast forward to 3:20.

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