Am I That Sharp

The other day when I was in KK and while having supper with a new person from Skyline SIB, this is what the lady hubby mention about me.

Cliff : Your son is really sharp
Mum : You don't know him yet.
Jason : Nah
Cliff : Yes he is, by seeing how he answers shows it all


At that time I felt really shy. I only know that person like a couple of hours only and that person say I am sharp. Does the way 1 answer shows that he / she is really sharp? hmmmm