Real Vegans don't wear Texas-sized belt buckles.

In reality, Don's problem is that he appears to have used a quote originating from someone else and it didn't become an issue until the celebrity publicity ("Black"mail) made the Rutgers gals aware of its personal nature.

Lesson #1 - Don, don't quote anyone; you are original enough.

Lesson #2 - The Rutgers gals were classy enough to be offended and appeared to "move on" quickly.

Lesson #3 - "Black"mail has become redefined in our minds by the celebrity news media; but it is still about money and how to exploit a negative situation.