At the restaurant where I worked, we would only ask "pink or no pink" if someone ordered their steak Medium, because there's three different kinds of Medium and we wanted to make sure we got the right one. "Pink or no pink" was code for "Medium Rare or Medium Well."
I admit, it was a strange system. Fortunately our menus had a fact sheet on the back with full-color photographs of Rare, Medium Rare, Medium, etc. on them, along with the internal temperatures. So most folks would just point at a picture and say "cook it like that one right there...Medium Well, please."