Going out and hitting on the largest girl in the bar. The goal is to get her interested so that she starts buying shots for you and her until she "tips over." This activity is great when you are bored and want to keep your tab low.
Ever since the Lambdas got kicked off campus they have been going downtown to go cow tipping every weekend.
That guy from the new Gamma fraternity tried to go cow tipping the other night but forgot he drinks like a fairy and ended up getting drunk and going home with her.