When a woman begins talking about another male or is talking about some stupid moment a guy she knew did something really cool, it is important the situation is handled correctly. How you react is vital. What I've learnt over the years through the seddit community namely mystery method is to not let her inflate another male, you are the dominant male and you need to take control, you don't sit and nod to her you should interrupt and could tell her a story of when you did something awesome.

After having this situation happen to me a few times I've come up with a better solution. If you have already established yourself as an confident positive guy (opening/introduction phase). The key is to acknowledge the other male as being awesome sarcastically. What I've done with great success is to lock eye contact with the girl, give a slight smile as if being sarcastic, pause and say something like "That sounds pretty awesome" and let the silence do the work. It works because you're indirectly transmitting to her that you don't actually need to inflate yourself around her, you're capable of inflating yourself but you don't need to. Like a shit test. She expects you to say "Oh ye! well my dick is 10" bitch" when the real test is inner game, you know what your capable of so you don't need to prove it to anyone but yourself.