Is my penis abnormally small or large?

There is no real border between what's considered "normal" and what's "abnormal." Unless your penis is really small (like shorter than 3 inches for an adult, or longer than 10 inches), consider it normal. If you're worried about being able to please women sexually, you should know that a small penis in no way prevents a man from pleasing a woman. As the old saying goes, "It's not the size of the wand, but the magic in it." (For more, see JackinQ&A – Questions About the Penis.)