Almost everyone coins or uses expressions that make sense to only a few people. What word or phrase do you use most often that you have to explain the meaning of to others?
I often use the term "Floopy" which I think was a Pheobe-ism (from Friends). When I say I feel "Floopy" it means I have an almost indescribable sense of restlessness and anxiety for no particular reason.
Another word I use which frequently causes quizzical frowns is "Sootica". It's a pet name I have for my brother which has become very useful in recent years as he and my Fiance are both called Chris!
"Sootica" was the name of a green-eyed witches cat in a series of audio books I used to listen to as a child. The main character was Sootica's brother, "Gobbilino" after whom the books were named was born with blue eyes and one white paw, when the which saw this she rejected him and he ran away to embark on various adventures and evetually achieved his dream to be a kitchen cat.