Well, to cut a long story short, I'm more or less a 16 male (give or take a few months) and is into masturbation (hey, who isn't? :P)

Anyway, I mean, I realise I'm young and all, and I don't think I'm fully developed, so to speak, but I'm a tad curious (worried?). My Penis (notice the capital letter, I'm proud of him! :P), when measured in (what I believe to be) fully erect state, is about 15 centimetres from the very base. I'm not entirely sure how that works out in inches, sorry. My Penis has a visible 'head', but it's not all too predominant, and when fully erect, my foreskin doesn't peel all the way around it, if you can understand what I mean.

So, my questions are: is my foreskin/head situation normal? Is this a regular size for a Penis, and will it continue to grow given my young age? And, finally, does the time you last masturbating bear any indication as to how long you'll last in sex? I'm not all too worried, mainly curious, but it wouldn't hurt to set my mind at ease :P

Thanks for the help in advance, everyone.

You sound normal to me. Your penis will keep growing until you are atleast 19 - maybe 21. Masturbation has little to do with how you will have sex. The two are different enough that they almost are unrelated.

Your foreskin retraction might be a bit problematic. I would be sure to clean well -sometimes it can get stuck. And use lubrication - that might be all you need.