|Gallery of Becca DiLucci images (2)|
In Happily Ever After, Barney says that there are plenty of women he slept with he doesn't want to see again, some of them for the very first time, but he still would not hide from them. Ted mentions Becca DiLucci, which seems to upset Barney.
Becca is revealed to be a girl in prison Barney used to hook up with. On one visit, Barney tried to chat up another inmate, causing a fight to break out. Since then, Barney has received threats from Becca on multiple occasions.