Blender, Eacott and now Steve76
You guys would all know the OZ term of endearment, 'he's a bastard'.
Used diffenently it might be he's a real mongrel bastard' not very endearing, at all!! - or 'he's a right bastard' you know giving us a hard time, the final one - 'he's a proper bastard' meaning he's shown up and skiting about something right our of reach of the rest of us at that time.
And I reckon that Blender, well he's a real proper bastard!!