For one human male, one penis would have to be considered the "best", as any more would likely be a cause of a serious mutation.
Just one
7
Use your tongue.
one time a guy had surgery to have two penises, but only won worked
4 billion and 7 penises
6
An atom behaves on how many penises it has
14 which includes their penises
some monkeys have penises
Five.
3 penises
Swans are the only birds that have penises.