Which is the family guy episode (season and episode) with the vasectomy song?!

Question: Season 3
Episode: The Sibling Rivalry

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Answers: Season 3
Episode: The Sibling Rivalry

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That episode is when Peter and Lois think they're pregnant and it was just a close call. And they don't want it to happen again so Peter suggets Lois get her tubes tied and Lois suggets Peter get a vasectomy. So Peter and Lois have a funny car race to Fenway Park, if Lois loses she has to get her tubes tied and if Peter loses he has to get a vasectomy. Peter doesn't know what it is and the babrber shop trio sings the vasectomy song.

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