Guest over a year ago Im a 13 year old boy so, is it normal to have a 7.5" penis? Loading... Guest over a year ago Do you mean when erect? Reply Loading... Guest over a year ago In reply to anonymous on 2017-10-07 - click to read Yes, when erect I mean Reply Loading... freshman noise over a year ago How are you measuring it, along the top or underneath (tip to balls)? Reply Loading...