Nothing like a little self deprecation...
So this father gets his son bass lessons. He picks up the boy from his first lesson. On the way home he asks, "So what did you learn today, boy?"
The kid shows his old man his axe and answers, "You see this string here dad, that's the "A" string."
"Great!" His father answers.
A few days later the father picks up his son from lesson 2. Again he inquires how it went. The son replies, "You see this string dad, well that's the "E" string."
"Great!" His father replies.
A few more days go by and the father asks his son, "Are you ready for me to take you to your bass lesson?"
To which the son replies, "Not tonight, dad. I gotta' gig."