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1.
Short for: If I Had A Penis Plan

When a female gives a male advice on how he should deal with a specific problem/ situation.
Guy: It is so expensive to go out in NYC.

Girl: Why don't you just pregame hard then go out.

Guy: I'm not a chick, I don't get drinks bought for me after the pregame.

Girl: Well that's what I would do in your situation.

Guy: So is that your IHAPP for not spending a lot when you go out?
by m.fucci November 12, 2009