family only words

wondering if any of you have words that you use only in ur family, word that already exist that u guys use diff or new words. like it might of started off as a joke but it a pretty normal word you use to describe something or just say to each other now.

for my family its "cherry" or "cherry Pepsi". it mean putting something old in with the same thing except its new. this happened bc my mom doesn't like to waste. so one Time my ddad got cherry Pepsi by accident and nobody in our family liked it. memo drank it even tho she didn't like it so it wouldn't be wasted.but when there was a little bit left she kept telling use to finish it but nobody wanted to. the regular Pepsi was already empty so my mom just poured the cherry Pepsi into the bottle of the regular. then throughout that day everyone drank it thinking its regular Pepsi only to be surprised. now whenever my mom puts something that has been left and not being used bc there's a new one and put what left of the old on in the new one, we say she did a cherry or cherry pepsi. the story is actually really funny even tho it doesn't sound it much, that why we still remember it and use that catchphrase. my mom tricked us all and she still does. like when im expecting fresh popcorn that I popped a bit ago and end up eating old stale soft one instead bc my mom decided to put an old bag of popcorn in my new fish ones.

I wanna know if there are other words like that for you guys bc it feels pretty special to me and ik that its gonna go down in our family history and become our vocabulary and it started in my gen.