Random sentence formatter

import random

names           = ["George", "Joe", "Bob"]

adjectives_good = ["Cool", "Nice"]

adjectives_bad  = ["Dumb", "Stupid"]

nouns_good      = ["Bro", "Cool Guy"]

nouns_bad       = ["Retard", "Bitch"]

structures = [
"{names} is actually pretty {adjectives_good}.",
"{names}, don't be a {nouns_bad}.",
"{names} is a {nouns_good} and is not {adjectives_bad}."
]

print random.choice(structures).format( names           = random.choice(names),
                                        adjectives_good = random.choice(adjectives_good),
                                        adjectives_bad  = random.choice(adjectives_bad),
                                        nouns_good      = random.choice(nouns_good),
                                        nouns_bad       = random.choice(nouns_bad))