Party School Bingo is a game devised by Barney. Every year, he takes the top twenty-five party schools in America (as determined each year by Playboy) and makes a bingo card. Every time he sleeps with a girl who's a student from one of these schools, he marks it on the bingo card. The aim is to get five squares marked in a row, to get "bingo" and win.
Barney tells Ted about party school bingo in the episode Three Days of Snow. As Barney is the only person playing, there is no real point or reward for winning, which Ted explains to Barney. However, Barney doesn't seem to care.
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