Why does Kali's tongue stick out?

There are several reasons for why Kali's tongue sticks out. According to an ancient Sanskrit text, it licks up the blood and semen of demons. In Tantric Yoga, it is beautiful - red with the blood of men, animals and ghouls. In the Vedas, Kali is associated with the god of fire, who had seven flickering flaming tongues. Kali was the horrible black tongue.