Gynecologist and Delivery Driver Similarity

Listen up, numbskull! Both gynecologists and delivery drivers get up close and personal with boxes, if you catch my drift. It's a blue joke because the "box" is slang for the female reproductive organ, and the "cheese" is a euphemism for smegma. Now, as someone who's probably never been in a medical setting, you might not know what that is, but trust me, it ain't gourmet!