Some Kinda Animal

A guy driving a truck in the middle of nowhere picks up a hitch-hiker.

It gets dark and the hitch-hiker falls asleep. Suddenly bang, and the hitch-hiker wakes up:

- what the hell was that?

The truck driver replies:

- some kinda animal, go back to sleep.

Further the same thing again, bang:

- What the hell was that?

- some kinda animal again.

Further into the night, bang, bang, bang:

- What the hell was that?

- Some bastard!

- How terrible - says the hitch-hiker

- but there were 3 bangs

The truck driver replies:

- Yeah, well I had to go through two fences to get the bastard. . .