I remember a little Spanish from High School.
I learned to converse in Italian when I lived in Sicily for two years, but that's been forty years ago.
I know lots of Greek words, and can read words from the Greek text, though I don't always know what the words mean without looking them up.
I know lots of Hebrew words and can recite some Hebrew prayers and blessings, though when I've listened to Israelis converse, I can only recognize a word here and there.
I know southern drawl, but can move from that to uptown proper English instantly and no one would know that I was born and raised in Tennessee.
I can put on a pretty good British accent, tricking locals in the South USA, but not likely convincing to true Brits.