A boss has to fire one of 2 workers

A boss has to fire one of 2 workers, Jack and Jill.

However, Both Jack and Jill are skilled workers and he is finding it really, really difficult to pick.

So after their shifts, Jack goes home before Jill does, and the boss goes over to Jill just before she gets into her car.

He informs her of his dilemma.

“Hey Jill, I have a problem.”

“OK Boss, what is it?” she asks

“I Can’t decide whether to lay you or Jack off, what would you suggest?”

“Well, you’d better get the Vaseline, i’m going home!”