Means "PPP" which stands for "Pedantic, prudent and pretentious". Refers to a person (stereotypically a woman) who is opposed to, or abstains from, taboo recreation (e.g. casual sex, drugs and black comedy), and who
may also be hostile towards
people who promote or engage in them.
Triple Ps are typically described as being boring, haughty, purist, patronizing and close-minded
people.
Stereotypically associated with religiosity, feminism and cultural conservatism.