The Vestal Virgin shit was a reference to all the Brooke Shields bullshit in the 80s. The media figures at the time were more or less placing bets on who would get to bone her first. It was gross.
https://en.m.wikipedia.org/wiki/Brooke_Shields
So Coppola literalized it.
But if you aren’t old enough to remember all that it’s going to just confuse you.
Edit My wife reminds me this was repeated with the whole “Countdown until the Olson Twins turn 18…” thing.
Cheaper than a ground up design. But I think you can start the clock until someone uses a grinder and cuts the gun right off.