Related:

• Ah say, son, you're about as sharp as a bowlin' ball.
• Did you hear about the guy who couldn't find his way to the orgy -- you might say he lost his ball bearings.
• Kent: And how long have you been on the streets? Ba
  Going on five years, Kent. Kent: Ah. Son, your family might be watching....
• We have fun--that's what I like about bowling. You can have fun even if you stink, unlike in, say, tennis.
  Every decade or so, I attempt to play tennis, and it always consists of thirty-seven seconds of actually hitting the ball and two hours of yelling, "Where did the ball go?...
• As sharp as a marble / bowling ball / beachball / pin head / bowl
• David: "I was wrong about you, and I'm sorry." Kirk
  Is that what you came here to say?" David: "Mainly....
• Father: Son, it's time we talked about sex. Son: Sure, Dad, what do you want to know?