I'll just tell you what my ideal/perfect penis would be using the points that hardasarokkk set out there. (keep in mind that these points are ideal but not limited to) :
PRESENTATION: Clean and hard.
SIZE: Who here doesn't like gazing at a huge John Holmes sized cock? I know I do. But realistically, I'm thinking no more than 8 to 8 1/2 inches is what I'd be into. Any more than that and it might get to be a bit much to handle.
HANG: I guess we're talking about the balls here? Hang is good, but not too much. Just enough so they have a nice little bounce or swing as you get into action.
BALLS: I like big meaty shaved balls, but not freakishly big. Just big enough to fill your hand when you cup them.
HAIR TRIM: I'll take anywhere from no hair to a medium sized patch above and around the shaft. Really, I just don't want hair all in my face and up my nose when I go to suck your cock.
KNOB: Ah, the mighty head. The head should be a little thicker/wider than the shaft.
GIRTH: I'd like to be able to actually get my mouth around it so I can take it all the way down. So about 5 maybe 6 inches?
SKIN TONE: It's whatever. No actual preference here.
CUM SPLATTER: Well the more the better of course!
OTHERS: Also,(this might sound weird) I love a big bulging urethra. I love to watch it tighten and throb during ejaculation. And it doesn't really matter if the cock is cut or uncut. Either can be lots of fun (if kept clean), but I would lean toward the cut side if I got to choose.
Let's hear it from some others. Oh yeah, "pretty" is not a word I would use to describe a man's cock. Perhaps something like "great" or "awesome" or MAYBE even "beautiful". But not "pretty".