noun. Um... I'm scared to type anything here. *whispers* Call the police.
Real citation: "is studying to be a your-mum-in-a-jar-ologist...."
(June 9, 2009, Twitter, http://twitter.com/womby/status/2086410760)
Made-up citation: "Even the kindest and gentlest your-mum-in-a-jar-ologist is not going to be popular on Mother's Day (or the rest of the year)."