The everyday act of telling someone you can only have sex with them this one time only to come back the following day for more sex. Taken from the great movie "The Princess Bride" in which the Dread Pirate Roberts tells Westley (Cary Elwes) that he'll most likely kill him in the morning only to spare him every time.
Dude 1: Danielle said she wanted to have sex with me but she could only do it this one time. Then she came back this morning and we did it again.
Dude 2: Sounds like she's got a bit of the old "Dread Pirate Roberts" Syndrome