Leprechaunitis

A condition whereby the sufferer is under the impression they have Irish ancestry despite the fact neither there mother or father have any Irish ancestors. It commonly afflicts young white English individuals of upper-middle class status who realise that in-bred, illegitimate,web-toed royal ancestry isn't that trendy anymore and therefore self diagnose themselves with this condition of leprechaunitis.

Bristol university student on 17th March " Doctor, I have an uncontrollable urge to go to the pub tonight in a fucking stupid green hat, order pints of Guinness that I hate, and pretend that my grandad was called paddy"
Doctor " don't worry, you are just suffering from leprechaunitis, I imagine by midnight or before a real Irish person might kick some fucking reality in to your head"

Nitro-Nors

A hyphenated word of Germanic etymology. It is a play on the popular paint stripping liquid “Nitro mors”. It is an adjective that describes an incredibly annoying person, typically used towards very drunk individuals. From “Nitro” meaning very very and “Nors” meaning embarrassingly face punchingly annoying.

I saw my brother yesterday at a village fete; he had obviously been drinking alcohol since breakfast - he wasn’t just talking embarrassing gibberish and annoying everyone within a half mile radius - he was being a total Nitro-Nors.