Beto
A delusional liar who has lost all touch with reality, somebody who makes outlandish claims that can only be explained with drug use during the formative years
Peter: My sister got a pink unicorn with purple polka dots for her birthday.
Tom: Quit being a Beto! What did she really get?

Jorge: Julian said he will be President of the USA one day
Joaquin: You can't take anything he says seriously. He is has always been a Beto