A donkey & a chicken are out in a field when the donkey falls down a hole.
The chicken races over & jumps into the farmers BMW, ties a rope to the front & pulls him out.
Next week they`re out in the fields again & the chicken falls down a hole.
He tells the donkey to run & get the BMW but instead the donkey walks over to the hole, drops his cock in & the chicken climbs out.
The moral of the story:-
When you are hung like a donkey you don`t need a BMW to pull a chick!