The Doctor laid his hand firmly on the small of Booster's back to guide him out the door, let their sides brush a tiny bit. Baby steps, he remembered, with a twinge to think of who he'd last guided. Baby steps.
He pasted on a grin. "Best insults come on the fly anyway. Like, for example, that anyone with as much product in his hair as a certain someone I'm walking with cannot possibly have space for thoughts of any repute. Now, ears, ears make for lovely and versatile receptors, and are generally underappreciated, I find. Particularly the ears of geniuses, as I'm glad we can both agree I am."