CELEBRITY
05/24/2013 09:40 am ET

Bill Hader Slams Justin Bieber, Praises Justin Timberlake

AP

Nothing would surprise us after Justin Bieber's monkey business, so it's not shocking that Bill Hader slammed the 19-year-old singer for his diva behavior.

While chatting with Howard Stern about his final days on "Saturday Night Live," Hader dished about the guest hosts he's worked with. The "SNL" comedian told Stern, "Justin Bieber showed up with like 20 guys. He had a guy holding a slice of pizza. A guy holding a diet coke. Going around stage, you're trying to fight through all these people to get dressed.”

But while Bieber may be a diva, Hader only had praise for our other favorite Justin ... TImberlake that is ... calling him "a real class act" and adding, "The guy doesn't show up with anyone. It's just him."

Maybe little Justin should take a cue from big Justin.

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