Whenever people (e. g. car salesmen, politicians, police/security, etc.) say whatever they need to to get you to do what they want
When that salesman said I won a big prize in a contest he was lying out the ass!
My definition of lying out the ass?Wwould be someone that was a pathological liar.Who was involved in some kind of accident that damaged his face so badly.That the only solution doctors could come up with.Was to transplant his ass to his neck.His asshole would then be used as his mouth.So, his lying would continue, but would come out of his ass..not his mouth.Rather strange occurance.Something, maybe for the National Enquirer.
A person having his ass attached to his neck, would be "lying out the ass". Everytime he told a lie.