A person so insecure that he/she talks to young girls on the internet in hopes of getting some. Also a person whose head is so high up in the clouds that he/she can't tell the difference between his/her dreams and reality. Also has a small penis.
Wow, you just pulled a badboi!
You wanna be an astronaut? Your a badboi.
You're talking to 10-year olds? Your a badboi!