1. a girl who didn't like her middle name
2. a girl who makes a boy fall down onto a grass
a - summer pietila is a girl, did you know that?
b - who's that? i only know summerbrianna pietila.
a - yea, i was talking about her, and i heard she made daniel fall down while he was on the phone.
The condition of being excessively pious to the point of being an insufferable, judgmental boor. Sufferers afflicted with pietitis also tend to be raging hypocrites, eg, a closeted bathroom-cruising cock-sucking US Senator who consistently votes against gay rights, basing their vote on "Biblical morality" and "Scripture."
Judging from their viting records, it's easy to conclude that most Republican law makers in the US have contracted chronic cases of pietitis.