His behavior predates his mother's death. He'd always complain after an awards show for not winning. He infamously blurted out on live television, during a show to benefit Hurricane Katrina's victims, that President Bush hates black people and wanted to kill them. He's always had a big ego and big mouth. I've read that he was seen swigging from a bottle prior to the VMAs but he never should have been allowed up on that stage in the first place. MTV knew he was a loose cannon.

I can understand Serena Williams being upset because it was a bad call. Telling the line judge she wants to shove a tennis ball down her f-ing throat was out of line by any standards of decency.