Ep 22. Sibling Rivalry

In "Sibling Rivalry," the twenty-second episode of Family Guy's fourth season, Lois's sister Carol comes to visit, sparking some intense sibling rivalry between the two sisters. Carol is everything Lois is not: carefree, wild, and uninhibited, which makes Lois feel inferior and unadventurous. As a result, Lois tries to prove herself by taking on the role of Carol's caretaker, but things get out of hand when they both end up getting arrested for drunk driving.

Meanwhile, Peter wants to be part of the Pawtucket Brewery softball team, but is told he's too fat to play. Determined to prove them wrong, he starts a diet and exercise regimen, but finds that it's harder than he thought. With the help of his friends and some motivational music, however, he manages to lose the weight and make the team.

As always, "Sibling Rivalry" is packed with hilarious and sometimes absurd moments, from Peter's increasingly bizarre attempts at exercise to Lois and Carol's drunken shenanigans. The episode also touches on some more serious issues, such as sibling rivalry and the pressure to conform to societal standards of beauty and success. Overall, it's a classic Family Guy episode that delivers both laughs and heart.