Lying to a potential employer is a pretty bad first step. If I caught you doing it, say because someone mentioned it in a casual conversation, I'm going to fire you the same day. Same with lying on a resume even if it's utterly irrelevant multiple years later. It's also going to color any future professional interaction because you're an untrustworthy individual.

I'm pretty sure I don't want to be in a position where I'd be fired if a 10-year old lie came out.