His eyebrows climbed a little at the curse, but he let it go. He expected that Leela had a reason for using it, and that reason would come to light soon enough.
"I think Romana had just changed when I got here, actually. I remember talk of her trying to sort out if she'd become the kicking type when I stopped by the TARDIS." He'd been in a bit of pain, then, and still somewhat in shock after narrowly avoiding his own regeneration, only to be put face-to-face with the Doctor he'd been meant to become. "Why do you ask? What about the third Romana was so bad here?" He knew what she'd been like in the war, but he didn't know how much of that had carried over to Kansas.