Well, sort of. (After that Alexandra Robbins book, I'll take whatever I can get.) The book is The Jane Austen Book Club by Karen Joy Fowler, and here is the quote:
"Sylvia lived downtown, near campus but back from the street, directly behind the Phi Beta Pi sorority, unless it was the Pi Beta Phi. This was a hidden, tranquil location, except during rush, when the girls gathered on the lawn for a week, singing, "I want to be a Phi Beta Pi (or the other), boom, boom," like sirens to sailors. Of course, the club wouldn't have met here if it had been rush week."
This cracked me up when I read it. I wondered if the author had some Pi Phi connection, but you would think that she would have gotten the name right, although I guess the first-person narrator would be someone whose knowledge of Greek life is rather limited.
It's at least nice to be portrayed as enthusiastic rushers, then quiet the rest of the year.