Not sure there is a joke in there. For some reason the question kind of surprises you and you have to quickly decide on the spot whether to have the receipt or not. So you end up winging it, sometimes having it, sometimes not.
Nowadays, I mostly decline but on occasion still end up agreeing, so I can relate.
Or just use Hyper-V since it's natively available and one should refrain from touching Oracle with a ten-foot pole. I know it's just a means to an end but better to avoid bad vendors if at all possible.