A fan's dad asked Justin to sign a CD,  but Justin didn't want to... but that's not the problem, the problem is that Justin walked past the dad and then somehow the CD fell on the floor and Justin didn't even stop to pick it up or say sorry!

So the dad put up the video and explained what had happened. See the video below.

Wow! We are surprised how badly Justin acted. Could it be from all the stress and touring? This week the star has also been sick, so maybe that's it.

Here's the video so you can see for yourself.

SOURCE: bambini