When someone sells what's classed as a breeding bull, it must be as described.
It's basic trade descriptions
Selling a bull that turns out to be infertile isn't the worst crime a breeder can commit.
It's nowhere near as bad as the claim that 'his calves just pop out'' - when the reality is often very different.
And we should all be aware that over-fed pumped-up bulls at pedigree sales can be infertile or take badly to living in the real world. Treat pedigree breeders like scrap dealers or estate agents or lawyers - not to be trusted until proven innocent.