I have noticed that my erections seem to vary a lot in size. Sometimes I hit about 6" in length and about 2" wide with no difficulty, and sometimes I seem to be rock hard at 5" or less and maybe a half inch less of width. These figures are just guesses, BTW. How can this be? If I'm hard, then I should wind up about the same size each time...or so it would seem. Anyone else notice this?