lol, I like that one....

How many guitarests does it take change a lightbulb?

Ans: 21, One to change the lightbulb, then the other twenty to say, "it was ok, but I'd have done better"

£100 on a table, sat on the table is the lock ness monster, the phantom of the oprah, and a drummer who can keep good time, who takes the money?

Nobody, non of them exist!