panicdote

Recounting incidents that you make up under lots of pressure when you get caught doing something you shouldn't have to avoid telling the truth. Are often not well thought out and mostly presented to cops, parents, angry friends or teachers.

When one is supposed to be engaged in conversation and therefore actively listening, one can sometimes find oneself at a loss for words when, unexpectedly, a response is desired and the would be responder has not been paying attention. In an effort to comply, one sometimes stammers and says something ridiculous, unrelated or incoherent. The unfortunate utterance is called a panicdote.

An unreliable story or excuse created under duress in the moment of panic.

The feeling that occurs when you have started an anecdote and realise that you don't know where the story is going and you are likely to not even receive a single, isolated, pity filled laugh.