I'll go you one worse.

I had a guy who just couldn't wait, so he put the gun on the ground, drove his truck tire up over the barrel and used a jack handle wrapped in tape through the frame window.

He wanted to know if I could "fix that" after it failed to turn out like he thought it would.

Now, I was a pretty laid back 'smith. I'd give an honest opinion, and if they were going to screw a good gun up...I'd tell them in plain terms. I always understood that it was their gun to do with as they wanted.
However, there were a few times I wanted to grab the butchered gun and fling myself yelling, screaming, and cursing over the counter and, as an old timer told me, "Beat him until he turned orange" with the gun.