To each his own cock(black and white)

 Black and white cocks

To each his own cock(curious)

 You wanted to see my cock, that's it, it's done...

To each his own cock(hairy)

 Hairy guys cocks

To each his own cock(sportsmen)

 Athletes as we like them

To each his own cock(humor)

 I always liked to imagine what the models might say when they were photographed.