Inside jokes.

Do you have inside jokes with anyone that only you and they find hilarious? Growing up I had an amazing childhood and my sister and I spent a lot of time with our cousins. We hung out at my grams house a lot and were always up to something. To this day we will laugh uncontrollably at ridiculous things that only we find funny. My husband thinks we are crazy and doesn't understand but he is just a party poopah! Because every party has a poopah! (Name that movie!)

So what are some of your inside jokes that no one else will understand?