The diarrhea of the mouth word. When the caller talked about a "scientific" word that starts with the letter "t", the first word that I thought of was, "tangential".
English is my husband's second language. In the 18 years we've been together, I've only managed to beat him at Scrabble a few times. I play words, whereas he plays strategy. If I can make a great word, I don't really care about the points. He, on the other hand, is always looking for those spots where a tile or two can be added and numerous little words made.
This is a guess on the 't' word logorrhea. Mine tends towards racket ?
Tintinnabulation.
How about tittle-tattle?
My wife occasionally mixes a metaphor. Recently, she mentioned how everyone's ignoring the "pink elephant in the room." I didn't correct her because I love the imagery and implications - not only are they all ignoring the problem, but they may also be inebriated.