"It's Naked Time!"

Holly has a very embarrassing curse, and she has no idea how or when it began- but if she hears the phrase "It's Naked Time!", particularly if it's directed at her by one who knows the curse, she will suddenly believe that it is, in fact, Naked Time. And whether she likes it or not, or begs or bargains, and is still embarrassed- she knows that at Naked Time she must strip- totally. Holly will get completely naked and barefoot wherever she is, and then stay that way for an ever changing amount of time per curse activation, claiming that she is very embarrassed, but can't dress- since it is Naked Time, after all.

Who triggers Holly's curse?