What's your preferred penis size on a guy?

uhh... probably over 6 inches... as long as its bigger than mine I'm happy xD

6-10in is fine , as long as it is thick

Inward

Lol

over my size, which is 3in so that wont be hard XD

i think mine is 7in big blk dick, no one know it at all.

it depends on the situation....
For a dom 6 or larger
for a sub... it depends on what they are into but probably 3 to 5

Bigger is always better.

Man, I wish huge cock humiliation was a thing.

While length does contribute to some factor, girth is a bigger factor. Remember the most sensitive area is the opening, the more it stretches and is stimulated, the better response you'll get.
In addition, shape plays a huge role. For all girls the g-spot is important, whether the woman knows it or not. A penis that curves upward and grinds the area is preferred to one that is straighter.
One final bit, a cock is preferred over any toy. Nothing beats the texture of a hard cock, no matter how many do-hikys you throw on a toy, cock feels better.
Length isn't everything, just enough to enter up to the g-spot (2.5-4 inches inside depending on the woman), with girth and shape being bigger factors. Beyond that it really depends on the girls kink and the man's usage.

...Though I do like a guy who can batter my cervix with merciless hard strokes... So like my bf, 7.5 inches or above is my prefrence... -///-

That's a pussy

i.imgur.com/utzTCyo.png

Pretty sure it's a pussy not a Joke. I Can Tell The difference

Clits are just penises that never grew. Like trees that got cut earlier.


Then there are the Jew trees...

....