Student or Learner
Can I say:
'You're good but you're no Michael Phelps' instead of 'You're good but you're not Michael Phelps'
(August 16 - August 22, 2008 - Cartoons of the Week - TIME)
Truely, an 'inside" American joke.
Commonly used after the famous debate between presidential candiates Sen. LLoyd Benston and Dan Quayle, after Quayle likened himself to political icon, John F. Kennedy:
Benston says: "Senator, I served with Jack Kennedy: I knew Jack Kennedy; Jack Kennedy was a friend of mine. Senator, you're no Jack Kennedy." ...