If you picture it you will see that the use of capitals is very important. Note the following two sentences:

Yesterday after riding, I helped my Uncle Jack off his horse.
Yesterday after riding, I helped my uncle jack off his horse.

In the same vein is this similar example:

A boss tells his underling to lay off either Mary or Jack, and he is to decided.

He goes up to Mary and says:   I have to lay you or Jack off.   What do you think?

She says, the latter.

Because even if he accidentally  misayed it.  He would still end up in HR and be the one ending up being "laid off".

"wanna screwdriver?" joke either then.

I'm going to guess it:  
I can't right now.  
But here are a few screwdriver jokes from the internet:

So, since you twisted my arm....

 
A bus in the middle of nowhere has just one passenger, a middle aged woman.   Suddenly the bus gets a flat tire.   The driver pulls over and finds he doesn't have a spare, or even a jack.   What's more they are in a spot with no cell phone signal.  He sits and ponders what to do next.

In the bus, the woman rummages through her purse and finds a tool that she thinks might help.   She leans out the window and shouts:   "Wanna screwdriver?"

The driver shrugs his shoulders and says:  "I can't change the flat or reach anyone, so might as well."

 
Ba-doom.

And yes, he will no doubt be in trouble with the HR department as well.

END OF MESSAGE