Spidey Gansta

Sarah and I were folding laundry.  I had bought Noah a pair of Spiderman underwear at a garage sale earlier in the day.  I said to Sarah, "I wonder where Noah's new Spideys are.  They should be in the laundry pile..." and Sarah said, "He's wearing them."  I asked her how she knew what underwear he was wearing, and she said, "Because we were playing baseball in the garage, and he was batting gansta style."   What?!  What is that, I wondered.  She said, "It's when you pull your pants down to your knees and your underwear shows."  Where do they get this stuff?