So, your girlfriend has been ignoring you lately - but won't you do something to change her mood? Her big secret is... she's got an addiction to big dicks. No, I'm not talking about oral sex here. A: A giant red flag is when a man constantly rides his large hard rod while she sits on the couch, watching TV, or performing other sedentary activities. B: If you're a mature guy, then you already know how to satisfy a woman in bed, because you've been doing it for years!.