spree liar
Someone who can't tell just one lie, they are a liar who's gotta tell like 4 or 5 big whoppers every time they speak, just to keep you off the trail of all of the other lies they've told. While a compulsive liar might lie to look cool or a pathological liar lies about little things for attention, the spree liar is compulsively pathological about lying as much as freaking humanly possible without stopping.
It takes a spree liar like Donald Trump to get nailed for lying by Washington Post fact-checkers eight times in a single speech.