Booster smoothed out the startlement with a grin almost before it'd settled. "Is that so."
The catchy little tune Jack was humming got picked up on the TARDIS speakers in full band. Booster's grin only widened at the thought that they were giving their little psychic ship a floor show.
"I don't think I know this dance." He kept moving, proving himself a fast learner- with the right incentive. "I think you'll have to teach me."