Missing parts

My kids have a weird sense of humor. One day my 18 year old daughter was teasing her 16 year old brother. She said, "J*** is a Eunuch.". My 8 year old asked what a Eunuch was. One of us said, "Uh, it's a guy who is missing certain parts.". He said, "Oh then J*** IS a Eunuch! He is missing his appendix!"