At this point, if you're planning on going to a Rihanna concert, you know you have an hour window after the designated start time to get there.

The 'Diamonds' songstress is notorious for making audiences wait, so when people get seriously angry at RiRi now, we kind of don't get it. She's gonna be late -- plan accordingly. Period.

A crowd in Manchester, England was NOT happy after Rihanna was an hour late and let the singer know it in a rather immature way. After letting her backing vocals sing 'Rude Boy,' RiRi gave a little speech to her fans to let them know she didn't appreciate them pelting her with random objects.

She chastised the rude boys and girls saying, "I like that. I like that a lot. Actually I love that s---.  I knew you were all going get crazy but f---. This is next level. There’s a good crazy and there’s a bad crazy. When you throw s--- up here, that’s an epic fail. I wanna get your gifts but I don’t want you to knock my people out. I swear to god, cut that s--- out. Really, chips? Chips though? That’s that important?"

Hmm, maybe people wouldn't be so angry if you showed up to your concerts on time!

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