using two or more languages at the same time in speach/writing. My friends and I used to find ourselves using the Irish or French words for things in conversation. We were studying for our oral exams in those languages at the time, so sometimes could think of the French/Irish word for something easier than the English.
Hey, are you ag dúl amach tonight by any chance?
(hey, are you going out tonight by any chance)
yeah, on va danser in Liquid
(yeah, we're going dancing in liquid)