Good question!
I bet we all have a different answer too....for me a PM is sweet and fruity. I think it's the fruit to me that turns it into a PM. For example, Anais Anais is massively sweet, but it's white flower sweet, so not (IMO) a PM. Paris thingy, on the other hand, for me is a PM, because of that overload of peachy sherbet. L'Air du Temps- sweet, but not a minger. Diorissimo, sweet, and heavy, but not a minger.
An excess of vanilla also contributes to PMness.
Dewberry was a PM. (actually, despite me blaming Tresor and Eden for being the mothers of all the PMs in existence, I realise I'd forgotten the monster that was Dewberry)
Will muse some more.
Having changed my clothes 3 times today because of getting wet in torrential rain I am now in PP Opium after a Lush bubble bath bar bath and feeling very very cosy.
Enjoy your business dinner Bluebell and good luck for tomorrow Fosco!
Have PP not started doing dupe Tauers yet? Shall we suggest it?