What is "a thing or two"

Usage examples of "a thing or two".

If this turned out to be one of Bony's pranks, she'd stake his skinny arms and legs to an ant hill till he begged forgiveness, then she'd have a thing or two to say about pacts and marriage.

I learned a thing or two about healing on my pilgrimage, and I was on hand.

My word, but the Gaffer would have a thing or two to say, if he saw me now!

Even as it decimated the Rider's people they learned a thing or two about how it worked its genetic manipulations across numberless alien species.

Mabel was not too happy about this little man in overalls, but obviously he could teach her husband a thing or two.

I don't like to indulge in self-praise, but I believe I know a thing or two.

As may be, I have no wish to visit Colorado to learn a thing or two.

Mark my words, son, the Emperor has a thing or two in store for the so-called Alliance, and your father will be revenged.

I thought all that Jedi stuff was supposed to teach you a thing or two but I guess you're just as goddamned nieve as when I first met you!