There have been a few topics on this, maybe that's why the lack of respsonse, perhaps.

I was full size in 7th grade, 8th grade at the latest. I bet I weighed about 110-120 lbs, maybe 5'9", 5'10". Since I'm not a huge "shower," It didn't look ridiculous unless I was fully erect. And I had no idea how large my size was compared to other 12-13 year olds.