Piss and cum challenge

The slave gets a challenge from us: In the toilet chair Missy Van Licks, Mistress Blackdiamoond and I piss on him one after the other and he has to swallow. Meanwhile he has to wank his dick and cum. If he doesn't do that while we're done pissing all over him, he will remain chaste for a year as punishment! Do you think he can do that? Swallow our golden shower like a good boy, slave!