Offering random girls backrubs (especially with that “or something” at the end) is advised against. It can instantly make women overly emotionally… and pretty soon they try to have you arrested for attempting to be a decent human being and offering strangers the luxery of a backrub. And sometimes, yeah, maybe a happy ending… but that’s just a side effect of helping people.
(for those of you new to the strip, this isn’t the first or last time you’ll see Frank and his depressingly frank adventures).