A bullshitter or someone who talks a lot of nonsense. It describes a person who is annoying, unreliable, or full of it (comes from paja, which means straw or nonsense, but also refers to masturbation).
A foolish, naive, or stupid person. (The term stems from a vulgar word for masturbation, but in Venezuela it is commonly used to call someone a jerk, an idiot, or a dumbass).
A dumbass, idiot, or loser. It refers to someone who is foolish, useless, or talks nonsense. (The term originates from slang for masturbation, similar to wanker in English).
A person who likes to snitch, gossip, or rat someone out, often doing it just to spite others out of envy. (The term is most common in Venezuela to describe a bigmouth or someone who betrays trust).
Joel: Orlando went and told my girlfriend that I went out partying. Nani: That SOB is such a Pajuo.