john r. lind , 34 , admitted tainting pat maahs ' drink with his semen while they worked together at beisswenger 's hardware store in new brighton , minnesota .
ramsey county district court heard that he masturbated over her desk multiple times while she was away .
john r. lind , 34 , -lrb- left -rrb- admitted tainting thought the coffee smelled bad because the milk in the office was spoiled .