a sargent

The Criminal Activity series:

When Paul Arthur claimed he was a Professor everybody was impressed.

And a Professor at two universities (two, not just one).

Then, later, his party friend, also named Paul, said he was a teaching Assistant.

People's minds were now confused: Is Paul Arthur a Professor or just an Assistant?

Paul Arthur himself provides the answer (here).

Conclusion: Paul Arthur is a sargent who claims to be a general.