Drunk, Magnus, or I wouldn't be a Mastermind contestant (9)
"Drunk" - anagrind
"Magnus, or I" - anagram fodder
"wouldn't be a Mastermind contestant" - definition
(For those who don't know, Mastermind is a quiz programme where contestants answer questions on both a specialised subject and on general knowledge. It was originally hosted by our late local worthy Magnus Magnusson, whose daughter Sally, a BBC Scotland newsreader, still stays in our village).