dejawitticism 

Coined in 2003, the word is used to define a function of the English Language not yet covered or at the very least, unknown to several researchers.

Definition: To use part of a conversation later in the same conversation. Perhaps to be a little witty, the end result is the use of the "conversation tidbit" to illustrate another point during the same conversation.

To give an example would be a conversation tidbit. See above :-)

dejawitticism by John Holstein, www.cotse.net March 9, 2004

deja-witticism 

To use a word or phrase twice in a non-consecutive, unrelated conversation, in a joking manner. Such as the use by comedians during a stand-up routine.

Comedian: Your momma is so dumb she thinks Taco Bell is a Mexican phone company.

....later in the routine.

Comedian: so, I went out with a good looking blonde MILF the other night... yea, didn't go real well... went to the movies then asked if she wanted to go to Taco Bell, she asked me why I wanted to visit the phone company.

deja-witticism by Colonel Flagg May 9, 2005