The Cum Never Lies

Lexi suspects her slave of masturbating without permission, she loves mental bondage but hates liars. There is only way to tell if her slave has been honest in telling her that he hasnt been jerking off. It is absolutely necessary to test the contents of his balls and measure the distance of his ejaculation. Lexi instructs the slave to stroke his cock, she tells him the consequences for lying as he nervously strokes. The further he squirts the less the punishment, after 3 weeks of withholding from orgasm he should shoot no less than 4 feet. Will he pass her test???