97KiB, 999x666, skateboard-trick-tipp-360-flip.jpg View SameGoogleiqdbSauceNAO Anonymous Sun 10 May 10:31:40 2020 No.11655892 ViewReplyOriginalReport Quoted By: >>11655896 >>11656070 What would a "skateboard trick" algebraic structure look like? Would it be a symmetry group?