JIZZABELLA.
He made it up all by himself by combining his friends Jasmine & Isabella's name and is hell bent on us considering it for his sister.
I've tried to suggest even Jazabella to stop him saying Jizz, but no, apparently not the vision he has in mind.
Can't wait until DP gets home from work later to be given this wonderful option.
DS is 6 BTW, so completely oblivious!