In the first season he used to take a lot of delight in the doublespeak.

In the Pilot, for example, when Lois asks Superman how she can find him again he tells her "I'll be around." When she next sees Clark she asks him where he's been and he says, "Around."

Sometimes the hint was broader and she still missed it. Like in Wall of Sound when he comments that the Kerth award is smaller than he thought. Then Superman shows up at her apartment and admires her display case, telling her that it makes the awards look "bigger".

I don't know if that's exactly what you're looking for, is it? Times when he's dropped hints that she didn't even register?

Lois: You know, I have a funny feeling that you didn't tell me your biggest secret.

Clark: Well, just to put your little mind at ease, Lois, you're right.
Ides of Metropolis