Odo: Are you sure you’ve returned to your normal size?

Miles O’Brien: Of course.

Julian Bashir: Why?

Odo: Well, you both appear to be a couple of centimeters shorter than you were the last time I saw you. A Changeling notices that sort of thing.

Quark: I didn’t want to say anything, but… you do look a little on the petite side.

Julian Bashir: Infirmary!

[they hurry out]

Quark: And they say you don’t have a sense of humor.

Star Trek: Deep Space Nine, Season 6: Episode 14 – “One Little Ship”