My last name is 2nd!!!

So, yesterday my class was doing their monthly writing project for the district and as they were finishing their work I was coming around and writing their initials in the bottom corner. I was saying their first and last names out loud and then telling them their initials as I wrote them. So, I get to little Jeffrey who acts very grown up for his age - in fact he is my student of the week for last week because he sets an amazing example on how to behave. Anyways, I sat down next to him and said, "Jeffrey is your first name so J is your first initial and Fahey is your last name so F is your last initial, JC" and then I wrote it on the paper. He immediately jumped to the defensive and said, "Fahey isn't my last name!". To this comment I responded with, "really, what is your last name then?". He replied, "2nd!" I have to admit that I immeditely knew what he was talking about and began to giggle inside but to him it was no joke so I wasn't going to let him feel foolish in any way. So I replied to him, "Oh yeah I remember you are Jeffrey Fahey the 2nd". To this he said, "yeah"! I nodded and removed myself to another table continuously laughing inside. It was soooo cute!!!