"Standing Watch" joke
A married couple has been stranded on a deserted island for several years. One day, another man washes up on shore. He and the wife immediately become attracted to each other, but realize they must be creative if they are to engage in any hanky-panky. The husband, however, is very happy to see the second man there.
"Now, we'll be able to have three people doing 8-hour shifts in the watchtower, rather than two people doing 12-hour shifts," he says.
The newcomer is only too happy to help and even volunteers to do the first shift. He climbs up the tower to stand watch. Soon, the couple on the ground are placing stones in a circle to make a fire to cook supper. The second man yells down, "Hey, no screwing!" "We're not screwing!" they yell back.
A few minutes later, they start putting driftwood into the stone circle. Again, the second man yells down, "Hey, no screwing!" "We're not screwing!" they yell back.
Some time later, they're putting palm leaves on the roof of their shack to patch leaks. "Hey, I said no screwing!" the second man yells down again. They yell back, "We're not screwing!"
Eventually, the shift is over and the second man climbs down from the tower to be replaced by the husband. He's not even halfway up before the wife and her new friend are hard at it. The husband looks out from the tower and says, "Son-of-a-gun. From up here it DOES look like they're screwing."
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