1997, I'm Alan Partridge (TV series), To Kill a Mocking Alan
Jed Maxwell: See you next week then. We'll have that pint.
Alan Partridge: Yep.
Jed Maxwell: ...go and see my brother.
Alan Partridge: No way, you big spastic! You're a mentalist!
Source: wiktionary
In front a staff sergeant with the new Royal Caledonians was gassing about Scullion and the regiment. 'And this major's a total fucking mentalist,' he said. 'What's mental about him?' asked the lance corporal beside him.