How to pronounce “smarty” in English

You raise your hand and you say, hold on there smarty pants professor, you didn't tell us the compounding rate, and we need it.

Guy comes up to me after the talk and he says, all right Mr. you know, Mr. Smarty Pants.

We don't know how a particle looks like, so we have to represent it with some kind of little smarty sphere--

When I do it, I feel like, ugh, Mr. Saunders, what do you think you are smarty pants?