Martha sat and watched the Doctor bounce around the console, looking for something to 'repair'. She almost snorted upon remembering his recent burns.
The Doctor turned around prepared to ask her opinion for a planet but instead frowned at her comical expression "What?"
"Just remembering when you sat on the oven and burnt your arse" Martha replied with a large smile "Has it healed yet?"
The Doctor simply turned back to the console bright red and whispered "Not yet"