My current nickname is Succulent Sausage. Here's how I got it.
I like to call my littlest sisters affectionate nicknames such as "goose" and "Ninny". One time, they asked what ninny meant, and I told them it meant someone who acts silly and a little stupid. They decided that I was both, and started calling me Surouni, a combination of my name and "ninny". They then told my oldest younger sister about my new nickname, and she thought it sounded like a type of sausage. Thus, I am now called Succulent Sausage, and do not like it one bit.