Hacked off?

A hack golfer spends a day at a plush country club, playing golf and enjoying the luxury of a complimentary caddy.
Being a hack golfer, he plays poorly all day. Round about the 18th hole, he spots a lake off to the left of the fairway.

He looks at the caddy and says, "I've played so poorly all day, I think I'm going to go drown myself in that lake."

The caddy looks back at him and says, "I don't think you could keep your head down that long."

source joke-pages.com 
image golf.com