Because they often spend years at C EDIT: made it more punny
Vitamin "D".
Arrr son!
How many did it take last year
An English actuary can tell you how many people are going to die next year. A Sicilian actuary can give you their names...
Ever seen a fish spend a fortune trying to hook a human?
He was taking a sheet.
I.C. !
A: To be like Vanna White and learn the alphabet.
Because he never learned.
Interviewee: "I never learn from my mistakes" Interviewer: "Oh, why's that " Interviewee: "I never make any"