Jimbo: I essentially agree with prepky's comment. I think the point here is that the guy's PARTNER loves to hear it because it turns her on, so maybe he is accomodating that request and making it a "win-win" situation for them both, and it is not just bragging on his part. The fact that he likes to talk about himself and finds it erotic rather than pretentious just makes it easier for him to give her what she likes, in this situation. Whether or not his other partners like it, is a matter of their taste and someone in tune to their partner should be able to pick up cues and NOT put so much emphasis on their size if their partner does not find that kind of sex talk appealing.
Even though I seldom talk about my size during sex (or am very verbose in general), I had a girfriend who loved to hear me talk as MUCH as I could during sex telling her how good/tight her pussy felt, asking her how she liked my big dick, etc., etc. and when I did so, it sent her into a higher level of orgasmic pleasure. So even though I am not a "talker" by nature, I did it for her and it made sex together better for the BOTH of us since I like to feel that I am satisfying my partner to the best of my ablity, not just "getting off" on her.
Therefore, I would not judge this couples' sextalk or sexplay as "good or bad". Sex to me is about mutual satisfaction and not just each partner "getting theirs" but also by doing what the other partner likes to heighten their sexual experience. So unless you have some deep-rooted aversion or repulsion for a certain activity, that you partner wants you to do, "just do it". You may discover new sexual avenues and levels of pleasure for yourself you never knew you had. ;D.
