These two Polish men rent a boat and go fishing in
a lake. They are amazed at the number of fish that they caught that
day, so one says to the other, "We'll have to come back here
tomorrow!" The other asks, "But how will we remember where this spot
is?"
The first guy then takes a can of spray paint,
paints an X on the bottom of the boat, and says, "We'll just look for
this X tomorrow." The other guy says, "You idiot! How do you know
we'll get the same boat?"