A phrase said to an adversary during competition to enact a period of chilling. 'Chill Dog' was made popular after the emergence of the original Kimbo Slice viral video. Kimbo was told to 'chill, dog' after fuckin up the other dudes eye in a backyard fight.
When you take a shit in between a womens breast and "tity fuck" her so this resembles a chilli hot dog. Homosexuals also practice this by shiting in between his ass cheeks or he may shit himself and your put your penis in between his "Buns".