A/c: 'Approach, Airtwit 1234 with you, visual with the surface'
ATC: (Thinks): 'So what. Is he trying to drop a hint?'
Next day.
A/c: Approach, Airtwit 1234 with you, fully visual'
ATC: (Taking hint): Airtwit 1234 cleared for visual approach runway 18, QNH 1012'
A/c: Errr roger, it's still a bit hazy so we'd like to stay with radar till we're established on final'.