Just my $0.02 on the broad themes discussed so far...
Fact or Fantasy: WHO CARES? It's a hot story. It got me off, and I'm gay. As far as I'm concerned the only issue here is which part of the forum it should be posted in.
11" Yay or Nay: Again, WHO CARES? I've seen my share of erections and it's just a plain confirmation of fact that the hugely overwhelming majority are in that 4-8" range that is considered quote unquote normal. For those 8+, congratulations to ya, you're blessed and gifted. In reality, "You're so big" really means, "You're so thick. The current bf I thought was absolutely enormous the first time he boned up for me. But, it turns out, his erection is actually SHORTER than mine, it's just that it's so goddam thick. You could have a 24" long cock and all it means is you just have to stop thrusting sooner 'cos you just hit the limit on whatever you're sticking it into. Thick is what counts, whether it's an a hand, a mouth, a pussy, a butt, or anything else. If you're 6 or 7" around, you could be 2" long and they'll be walking funny tomorrow.
Humiliation Yay or Nay: Again, whatever gets ya through the night. I would never claim to be anything more than slightly to the high side of the 4-8" average range, and I've gotten plenty of the low whistle of appreciation, and more than once I've been asked to degrade and humiliate somebody hung to the small side if not even below average. I got off, they got off.
It's a small world, life is short, you only go 'round once. OP is entitled to his reality, or his fantasy. Or both, or neither.
I'll say it again, hot story, got me OFF.
Cheers all.