Two liars were talking together

Two liars were talking together:

First: “My father built 1550 miles of 101 freeway in west of US lonely in one night.”

Second: “That is nothing but I’ve been born from my mother’s bum.”

First: “It’s impossible. I don’t believe you.”

Second: “Shut up. I’ve believed your 1550 miles distance but why you don’t believe my only 4 inches length?”