
1) Asking 2) Good tryout response 3) Recall 4) Request 5) Retract 6) Second audition
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https://www.crosswordclues.com/clue/callback

1) Encore 2) Recall
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https://www.crosswordclues.com/clue/callback
[comedy] A callback, in terms of comedy, is a joke which refers to one previously told in the set. The second joke is often presented in a different context than the one which was used in the initial joke. Callbacks are usually used at or near the end of a set, as the aim is to create the biggest laugh at the end of a comic set. The main pr...
Found on
http://en.wikipedia.org/wiki/Callback_(comedy)
[computer programming] In computer programming, a callback is a piece of executable code that is passed as an argument to other code, which is expected to call back (execute) the argument at some convenient time. The invocation may be immediate as in a synchronous callback or it might happen at later time, as in an asynchronous callback. In...
Found on
http://en.wikipedia.org/wiki/Callback_(computer_programming)
[telecommunications] In telecommunications, a callback (also written as call-back) occurs when the originator of a call is immediately called back in a second call as a response. == International calling == A callback, in this sense is a method of making low-cost international calls via a third country, usually the United States, where call...
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http://en.wikipedia.org/wiki/Callback_(telecommunications)

A punchline that refers, or `calls back,” to a joke or premise from earlier in the performance (as opposed to a tag, which is a consecutive punchline within the same premise). One of the most reliable comedy tricks, a callback can elevate a marginal joke to legendary. `And then he closed strong by tying it all together with a callback to his open...
Found on
http://www.encyclo.co.uk/local/22689

making reference to earlier material.
Found on
http://www.newenglandcomedyguide.com/terminology.html

a second audition.
Found on
https://education.ket.org/resources/drama-glossary/
noun a request by the manufacturer of a defective product to return the product (as for replacement or repair)
Found on
https://www.encyclo.co.uk/local/20974

Telephone follow-up to a printed invitation or advisory.
Found on
https://www.encyclo.co.uk/local/22470

a joke that refers back to another joke performed
Found on
https://www.encyclo.co.uk/local/22694

a joke that refers back to another joke performed earlier in the show; often presented in a different context.
Found on
https://www.encyclo.co.uk/local/23286

A joke which references a joke that occurred earlier in a set. Often elicits a strong laughter response and brings a sense of closure to a set.
Found on
https://www.encyclo.co.uk/local/23287
No exact match found.