[Beowulf9]

Yes, for heaven’s sakes, the Doctor who time travels in an English phone booth cannot afford to be placed into unbelievable situations.

[TomGuy]

Yes, for heaven’s sakes, the Doctor who time travels in an English phone booth that is bigger on the inside than it is on the outside cannot afford to be placed into unbelievable situations.

[FreedomPoster]

Technically it is a police box, and not a phone booth.