One-liners disguised as a two-liner opening...

I’m looking for more examples of a particular kind of pun. There’s a kind of joke that goes

“Did you hear the one about the [subject]?”

“No, what about it?”

[punch line]

I can’t think of any right off the bat, but what I’m REALLY looking for are one-line puns hiding in the above format. I know three examples, anybody heard any more?

Did you hear the one about …

…the editor who had his appendix removed?
…the plastic surgeon who hung himself?
…the cannibal who passed his brother on the trail?

Obviously, there’s no punch line with any of these. They work best when the victim isn’t expecting a pun, and doesn’t catch it immediately.

A baby seal walks into a club…

Aren’t these just the same jokes told differently? eg:
Did you hear about the constipated accountant?
No, what?
He worked it out with a pencil.

As opposed to:
Did you hear about the constipated accountant who worked it out with a pencil?

I don’t see the difference.

How about:
Did you hear abut the post asking for examples of jokes in MPSIMS?
No
That’s because it’s not there (yet).

Going to be there though, huh?

Did you hear about the courduroy pillows?

They’re making headlines!

Did you hear about the three holes in the ground?

Well, well, well…

Did you hear about the joke about the roof?

It’s over your head.

Did you hear about the butcher who backed into the meat grinder?

He got a little behind in his work.

Did you hear about the little Turkish boy?

He didn’t like the way he was being reared at home, but he couldn’t leave his little brothers behind.

Did you hear about the boy who brought the vacuum cleaner to the dairy farm?

It was udder madness!

Gaspode,
The puns on my examples all single-word puns (on hang, appendix and pass). This makes them much more hidden. No one’s going to hear yours as a one-liner and not know instantly that that’s all there is to the joke. I’m looking for ones that blind-side the listener… they’re waiting on the punch line for a second before they realize they’ve already been given it. Retvim is one to it, though. However, the adjetive baby is pretty crucial to the humor, and I think these work best if one isn’t necessary.