The same guys go on a fishing trip to Canada.

The same guys go on a fishing trip to Canada. When they get there,
they hire a guide and go out on the lake. One guy is getting all the
bites at first. As he hauls in the first one, the guide pulls it up
out of the water and throws it back. "why did you do that?"
"Not big enough". He gets another bite and after a few minutes, lands
another fish. The guide throws it back. "Still too small".
Finally he gets a really big fish on the line. He fights it for 30
minutes. The guide leans over the boat and cuts the line.
"What's wrong with that fish?" "Too big. You'll never land him."