there was this joke about 2 sperms swimming towards the egg and
getting tired. halfway, the first sperm said to the second "I
wonder how far we are from the egg?"
they met another sperm by the side of the passage and asked
him.
the second sperm looked at them and laughed like mad.
"hey you still have a long way to go man, you are still in the
oesophagus!" 
