I don't understand why a guy would lie about his size. It shows that he is insecure about it. I think that if you're going to talk about something, you may as well tell the truth. I don't get lying. It seems pointless.
I do feel slightly jealous at guys with bigger dicks than me. I think, "I want that." But I also feel jealousy when someone's dating a hot girl. I feel jealous over lesbians because I can't join in.
I feel slightly jealous at richer people, or more attractive people, or when someone gets better grades than me.
I don't really dwell on that jealousy and I don't turn it into something to rage over or put myself down about. I use it as motivation to go get what I want. That is why I joined the PEgym gang.
I do look pictures guys post. I'd post some of mine, to compare how it grows over time. I'd keep it in my log, but I don't own a camera so that's not possible.