Sibling Rivalry

Peter gets a vasectomy after a pregnancy scare from Lois, which puts a kibosh on Peter and Lois's sex life and Lois begins overeating and gets fat. Meanwhile, Stewie's sperm brother Bertram is born and fights a battle against Stewie.

Season 4 | Episode 22
TV-14-DLSV
PRESENTED BY
Cast

Seth MacFarlane

Peter Griffin

Alex Borstein

Lois Griffin

Seth MacFarlane

Stewie Griffin

Mila Kunis

Meg Griffin

Seth Green

Chris Griffin

Seth MacFarlane

Brian Griffin

Seth MacFarlane

Glenn Quagmire

Patrick Warburton

Joe Swanson

Mike Henry

Cleveland Brown