Summary: The Doctor definitely isnât acting his age.
“You are such a child sometimes!”
“What, me? I’ll have you know I’m far older than you, literally hundreds of years old!”
Donna folded her arms across her chest and glared at the Doctor, tapping her foot. “Then how about you try actin’ like it?”
“I am! You know your problem?”
“You act too grown up, always wanting to be sensible. Where’s the fun in that? Seems to me it must get boring. I mean look at you, you’re human, you don’t have forever so why not enjoy yourself while you can?”