(adjective) High strung, eccentric, prone to erratic, crazy or often senile behavior.
"You know old Mrs. Johnson that lives around the corner by herself and has like a million cats?"
"Yeah, she's a bit......Flocken"
A person lacking in charm, tact, wit, wisdom, intelegence, and any other qualites that are generally regarded as positive in a character.
Del Boy: "Rodney you Primavesi!!!!!"
BA Baracus:"I pitty the Primavesi"