A design firm tweets that Diddy clothing line Sean John stole a design they made for a symposium at the Yale School of Architecture. That's what you get for demonstrating your cool design skills with the word "Seduction."

Pentagram Design, which made the poster, called Sean John's shirt design a "shocking ripoff" on their staff Twitter account. Unfortunately, @PentagramDesign failed to @-tweet @IAmDiddy, so who knows if he even knows it happened. Someone needs to teach these people the proper way to call a rap mogul out. [Arcinect via Farleft]