He is not an active executive within the library, because he's a very busy guy.
You're going to be a busy guy when you get older.
Hey, he's a busy guy with things to do.
"He's a busy guy, and I can't let this interfere."
But Mr. Lee is a busy guy, and he had to say no.
Rush it through, and they're equally delighted such a busy and important guy found any time for them at all.
"I was a busy guy the rest of the weekend."
"I know how busy you guys can get."
He was a busy guy, patients to see, a book to write.
The busy guy started chatting away, like barbers do.