thing or two

The Wiseman reference betokens a certain seriousness on the part of the creators, an awareness that people might be watching who know a thing or two about the subject.

That's why I think she could learn a thing or two from her father-in-law.

So, let me tell Donald Trump a thing or two.

And you, if you decide to understand a thing or two, will need us.

Isaac Newton knew a thing or two about politics.