Sometimes diminutive: a cheeky person or creature; a troublemaker.
A dishonest person; a rogue, a scoundrel, a trickster.
A member of a criminal gang.
An annoying person.
Someone who shows off too much, a poser or poseur; someone who is overly self-satisfied.
A penis.
An idiot, a stupid person.
An ineffectual person.
A very informal address used between friends.
A person who wanks.