Will you remember me in 6 seconds?

This joke plays on the classic “knock knock” joke format and the concept of memory in relationships. The man repeatedly asks his wife if she will remember him over increasing intervals of time, to which she assures him she will. The repetition builds anticipation for a punchline related to memory. However, the joke takes an unexpected turn when the man uses a “knock knock” joke to abruptly break up with the wife, accusing her of not remembering him, despite her previous assurances. The humor lies in the absurdity and irony of the situation, as the wife clearly remembers him, yet he claims she doesn’t, using her annoyance with the questioning as a pretext for the breakup.