A guy is going on a tour of a factory

A guy is going on a tour of a factory that produces various latex products.

At the first stop, he is shown the machine that manufactures baby milk jars.

The machine makes a loud’ hiss-pop’ noise.’

The hiss is the rubber being injected into the mold,’ explains the guide.’

The popping sound is the needle poking a hole in the end of the milk jars.’

Later, the tour reaches the part of the factory where manhood rubbers are manufactured.

The machine makes a’ Hiss. Hiss. Hiss. Hiss-pop’ noise.’ Wait a minute!’ says the man taking the tour.’

I understand what the’ hiss, hiss,’ is, but what’s that’ pop’ every so often?’

‘Oh, it’s just the same as in the baby milk jars machine,’ says the guide.

It pokes a hole in every fourth rubber pack.’

‘Well, that can’t be good for the rubber pack!’

‘Yeah, but it’s great for the baby milk jars business.