To lie obviously about the unimportant and uninteresting, then when called on your lie to laugh and ask, “What are we talking about?” also to need excessive pieces of flare to prove ones existence and worth to society.
Can be used as a
Verb: “I totally Leblonded about the price of a taco.” Or “you are so leblonding right now”
Adjective: “you are one leblonding jackass”
Noun: “quit being such a leblond”