
Reminds me of this classic
A boy went to see his dad, who is a butcher.
Dad decides to show him around the shop
After doing the rounds along the cooler and the slicing machines, they come to the final piece of machinery
'Look son, this is the best machine of them all!
You put in a pig at one end, and a sausage comes out at the other end!'
'Cool! And does this also work the other way around?'
'No son. That only works with your mother'