I had a t who swore quite a bit when she was mad about the things i told her happened - mad on my behalf because i couldn't be.
then i had a t who swore regularly - but even more so when i did. like i'd say a swear word and then she'd add 3 or 4 more in rappid succession - i have no idea why.

currently, this t does not at all as far as i can tell. i have used a few "minor" words and she never blinks an eye. i usually sneek up on them as if in appology.