Since I know Spanish (I should say I knew Spanish -- I've not used it much in the last 5 years and my knowledge is quickly vanishing), the more I'm around my mother-in-law, the more I find myself easily picking up her accent and expressions.
Last night while competing in our annual tourney of Eurorails I heard myself using my mom-in-law's signature phrases and even copying her exact tone of voice!
I'm certain the explanation for my parroting is due to our proximity this last week. My mom-in-law has been my companion in the car, on walks, and in the kitchen as we prepare meals.
Have you ever fallen prey to this speech-copying phenomenon?