Sara. that was a wee bit crass!
Jason, I can assure you that you are average, neither small or big hun! I'm saying through both experience, and facts such as this website:
http://www.netdoctor.co.uk/sex_relationships/f acts/penissize.htm
I think your "girlfriend" is either extremely unexperienced, and is basing her knowledge on oversized porn stars, or is just an idiot who thinks it's funny to give people complexes whilst knowing **** all about the subject.
Anyway, don't worry, you are perfectly normal!