Two Goobers notice a couple of guys by a bridge.

The one guy drops over the bridge being supported by the other one holding his ankles.

After 5 minutes, the one hanging over the bridge shouts 'pull me up'.

His friend pulls him up and he's holding a 10lb salmon.

So one Goober says to his friend, "We'll try that."

Later, they come to a bridge and the one Goober drops over and the other one grabs his ankles.

After 5 minutes, the one over the bridge shouts 'pull me up'.

"Why, have you got one?" his friend enquires.

"No, there's a train coming" he replies.