It's been in the Cal Poly Pomona and UCLA dictionaries for years as well with a wide variety of meanings. Today, college students use dog in many ways. The Top Twenty most popular words we found this year were . . . Slang terms come and go. Vanna, whatever blows your hair back, and woman of the 80s.
Some slang words do have staying power.
Pass the bone to us or let us drop knowledge on you.