Is there a specific word for a humorous device wherein after a reaction, more information changes the meaning of the phrase

Question

I found it hard to summarise this in the title, and I thought a few examples would illustrate what I mean best:

"Well known local celebrities include Alan Bennett and Barry Cryer" (lead up)

<Audience woo>

"Wait a minute: Well known local celebrities include Alan Bennett, and Barry Cryer used to know his milkman". (Extra information).

<Audience laugh>

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Another example:

"'Open fire!', roared the Colonel." (lead up)

<Gunshot sound effects> (reaction)

"Yes I do love an open fire, he went on, warming his hands by the blaze" (Extra information, in this case laughing at the expense of whoever's in charge of sound effects).

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I hope I've made myself clear as to the type of comedy I mean, I'm just wondering whether it has it's own name.

Answer 1

These could be considered examples of the device called paraprosdokian:

A paraprosdokian (/pærəprɒsˈdoʊkiən/) is a figure of speech in which the latter part of a sentence, phrase, or larger discourse is surprising or unexpected in a way that causes the reader or listener to reframe or reinterpret the first part. It is frequently used for humorous or dramatic effect, sometimes producing an anticlimax. For this reason, it is extremely popular among comedians and satirists.

_{(Source - Wikipedia, emphasis mine)}

(I earlier thought these were garden path sentences, but since the trickery here is withheld information, not unusual parsing, this seems a better fit.)