telling everybody your limo is triple parked

(verb to be) inventing excuses, especially the same ridiculous tall-tale ones, over and over again, and using them in different situations and on different people

Marge Simpson : Homer, please help me get Bart to do his homework, I don't know what to do with our rotten apple anymore.

Homer: Bart, you uptard, did you hear your mother, go do your homework.

Bart (from somewhere in the house): I did do my essay, but unfortunately Nelson stole it and burned in the girls toilets; I will not waste my time redoing it.

Homer: speak to me comme du monde, young man. Are you telling everybody your limo is triple parked, again? (Homer now takes a broom and goes to Bart's room.