As a person who was an intern at the Daily Planet, it's probably not best to leave me to fill in the blanks to that 'I never ...'. I'd never stoop to Lake's territory but there are some pretty interesting ways to end that sentence.
But I'm going to take a stab in the dark ... you never... felt them? Neither have I. I just dated two girls that wore implants, one of them when she took them out. So I'm pretty good at spotting them. And while some of them are real damn good, I tend to be able to tell the difference. Which is why, viola, Lois Lane doesn't have implants.