Stating the obvious, because apparently it isn't for everybody. It's funny when nobody actually gets hurt. Many people were "hurt" here. The presenters for deli

Stating the obvious, because apparently it isn't for everybody. It's funny when nobody actually gets hurt. Many people were "hurt" here. The presenters for delivering sub-par presentations, and the viewers for suffering sub-par presentations. Company image and customer satisfaction suffer. All because of one person's doing. Not a very justifiable action even on the basis of humor. (not saying it's wrong to think it's funny, but it's likely that the net utility from that prank is negative)