Bullshit! Everybody is busy!
A couple of months ago, I was in a ghetto in Kenya. There were up to a million people living there by some estimates. They don't have jobs. They don't have food. They don't have electricity. They don't have anything - not even time. They're all busy.
I learned all about 'busy' from dentists in the Kansas City area back in the early '90's when I sold dental practice management software. The busiest dentist in Kansas City would find a way to take my call if it was important to him to talk with me - even if he had both hands and one foot in a patient's mouth.
The dentist who hadn't seen a patient in four days was too busy to talk to me if he didn't want to.
"I'm too busy" is a universally acceptable way to tell someone that they just aren't important enough, It's a socially and professionally acceptable excuse for not getting something done on time (or at all). It's a way to justify not doing things that someone else thinks are important.
But when you pull that line on the guy in the mirror, it's a self delusional lie.
In other words, "Bullshit!"
I'll do better, I promise.