Goofing off.

 What else would a Pharma executive chase?

Goofy is copyrighted by Disney.

No fooling.

 And it is not even April Fool's Day.

No fool like a mated fool.

To whom it may concern.

 Most of his mail is addressed to his alias, Resident.

D. John Mutard was originally on Square One's Mathnet, a series in a series.

Not rated.

Not the best viewing angle, unconscious.

It is a short video.

Taking the fall.

 His very own version of a fall from grace.

No great loss, in either case.

The tale of the tape.

 Numbers cannot lie. They are one hundred ten percent truthful.

Go figure.

For better or worse.

 He did not make the same mistake twice.

He avoids talking about it.