Although the fourth Doctor was known from time to time to enquire if anyone would desire to consume a Jelly Baby and the Third Doctor made reference to reversing the polarity of the neutron flow, catchphrases were not a staple part of the Doctor’s persona. When the series returned in 2005 all of a sudden each Doctor had his own saying. For the most part it was tired and actually detracted from the character, but of late, with sparse use, it has become a bit more tolerable.
A bit. Still, never mind.