hey JTL,
i'm extremely well hung and love big cocks on other guys, so i've been on both sides of the size queen thing. i think the only consistent sign of a size queen is when they meet you, the conversation comes around to size, and then they lose all interest in you if it turns out you don't meet their standard, be it 7" or 8" or 10" or whatever. (i admit i've been guilty of that at times. but i don't think of myself as a total size queen, because i like to talk with guys of all sizes, and not just about cock.)
but obviously a big guy like you is not going to discover size queens that way. i don't think there are any other giveaways, unless you just get a feeling that they're focusing too much on your meat.
i'm curious, what led you to post the question? are you feeling creeped out by some of the size queens around lpsg? if so, sorry to hear that, but to some extent it just goes with the territory. especially when guys like you and I post pics that make our big endowments clear.
andy