Punch. The stain at the bottom of the picture appears to be on a slightly tilted tile and the majority of fluid went to the lowest edge leaving a very light colored stain on the upper partbof the tile. If it were blood, the color of the stain on the upper part of the tile would match the color of the stain on the lower part of the tile. Also the tilted tile demonstrates the viscosity of the fluid is thinner than blood.