(n) the period of time in a woman's life where she feels the need to totally slut it up. She never actually decides to settle down with a cock- she just tastes a wide variety much like one tastes free samples at Costco.
Almost all women go through a period of cock tasting, and it's most common in females aged 18-24. If you are with a girl who claims to have not engaged in cock tasting, you should beware that it's likely coming soon.