Bullshit Billy

One who lies so much he actually believes his own bullshit.

Person 1: Hey look, a Bullshit Billy. Let's see what he has to say.

Person 2: I bet he thinks his truck will beat a Ferrari.
Person 2: How fast is your truck?

Bullshit Billy: It does 0-100mph in 4 seconds flat. It will smoke the fastest corvette made with 2 spark plug wires unplugged.

Person 1: HAHA thanks Bullshit Billy