It's always something. In Greenwich in the 70's, it was Valium-and-key parties. In the Valley in the 80's, it was mesclun parties and environmental sickness. In the 90's in South Central it was 40's-n-shorties.
Women trapped alone at home with children have always taken comfort in the company of mood-altering substances while their menfolk were living it up at fancy sports bars. And as long as the family had at least a 3-car garage, there was positively no downside.
Today, with the appearance of the Momtini and alcohol-fueled playdates in the NY Times, the 00's chapter has finally been written. And optioned. And adapted into a movie with Julianne Moore playing the drunk mom.