blood
Bodily fluid that supplies cells with nutrients and oxygen and remove residues. If it appears outside the body, then something is wrong.
See also
The following tags implicate this tag: bleeding, bloody_hands, bloody_teeth, blood_writing, bloody_hair, bloody_weapon, blood_from_mouth, blood_on_face, bloody_panties, nosebleed, bloody_tears, blood_splatter, bloody_clothes, blood_stain, blood_in_mouth, bloody_wings, blood_bag, blood_on_breasts, blood_spray, bath_of_blood, bloody_knife, bloody_bandages, and bloody_nose (learn more).