rack-a-lac

-The Cadillac of all racks. Racks referring to a woman's breasts, being large, and sway/move perfectly while in motion. Much like a Cadillac.

-Big perfect boobs

-A women's chest you can't stop looking at

Did you see that chick jogging, talk about a rack-a-lac

-Stop the car!
-Why?
-I just saw a rare find.
-Old Cadillac?
-No rack-a-lac
-.....Nice!