Even the biggest stars and wealthiest celeb's can get a reality check from their peers, as Jay-Z now knows. According to sources, Actor Robert De Niro (well known for his gangster films) called Jay-Z "disrespectful" for unanswered phone calls. The Altercation, during a birthday celebration for Leonardo DiCaprio stemmed from missed calls about a song Jay-Z was to record for the annual Tribeca Film Festival.

Two unnamed eyewitnesses stated:

"'Bob was sitting at a table, and when Jay-Z went over to say hello, De Niro told Jay that he never called him back,” a source revealed to the New York Post. 'Bob wasn’t in any mood to make polite conversation. He told Jay that if somebody calls you six times, you call them back. It doesn’t matter who you are, that is just rude,' another source added.