The grassman has got a computer from his girlfriend at his birthday.
One day the computer-table should be used another place. Afterwards the grassman would put the leads in the right switches. But suddenly he got very scared - he cried: Snakes are coming!
His girlfriend came and saved him. She putted the leads in the switches and kissed him. He wondered why the snakes didn't bite her.
That's how the grassman got a phobia - he is afraid of leads.