I am nearing the end of puberty at 17 years of age and I think my penis is a little small. At barely 4" on a good day, and as little as 3.5 on a bad, I think I'm a little under average. I've little experience because of this and the four girls that have seen my penis laugh and discontinue our activities. The one girl that I have had sex with was horrible because I am two small for almost every position including doggie style. I simply keep slipping out or can't reach. Ladies do you think my penis is small? To small to satisfy? And what size would you prefer.