Today I learned, while looking up 'Pallava' in my linguistics dictionaries (which wasn't in either of them; it's a type of script) and I came across the appropriately named:
Palilalia - "Speech disorder described as the involuntary repetition of words or larger units".
Perhaps one's brain is receptive to these things at certain times....I'm not so sure it's funny, now that I've spent time typing this up.
This word reminds me of 'echolalia', which, apart from the title of a Something for Kate album, also means "mechanical repetition of the words just uttered by another speaker, when symptomatic of a speech or other mental disorder".
Enoughough ofofof me and me and my linginguistic nerderdinessess.