I'm pretty sure the Doctor nor the Master has tried pizza before, and I think that's part of their problem. Like, go eat some food and take a nap and take care of yourselves, you extraterrestrial crazy people.
I CAN'T be the only the only one that thinks Andy's Dinosaur Adventures was inspired by Doctor Who, right? I mean, it's about someone who travels through time via a seemingly normal object (in Andy's case, a clock), and solves problems with it.