jjdov26: man, I didn't know I was opening up this much of a can of worms. Ok, lets recap:
Mushroom head -- a very large dick head that's corona is much wider than the shaft. (here is a question: is a mushroom head always larger, or does it refer more to the shape -- the rim being bigger than the shaft?)
Spear head -- a head that is angled smoothly (I guess that means kind of triangular?) whose sides are about the size of the shaft.
Helmet head -- we're not sure if this is a type of head or just another word for one.
What other types are their and which do women tend to prefer? I wonder if there is a way to "know" which kind of head you have. I guess to me, only really seeing my own, it is hard to know what it is.