vulgar slang An interjection indicating that one has no sympathy for the situation another person is in or how that person feels about it. Sam: "When you said I'd be getting a car for my birthday, I didn't think it would be some beat-up old van like this!" Dad: "Well, tough titty! You should be thankful to have a car at all!"A: "Ugh, I feel so horrible this morning." B: "Tough titty. If you want to drink yourself silly, then that's the price you pay."