Because Stewie was evil and attempting to take over the world.
The two parter Stewie Kills Lois / Lois Kills Stewie originally aired in the Sixth Season.
Stewie Loves Lois was created on 2006-09-10.
I think that would be either "Stewie Kills Lois" or "Lois Kills Stewie". Stewie gets upset that Lois didn't take him on vacation or something and he sets out and "kills" her.
if you don't want spoilers don't scroll down. . . . . . . . . . . . . . . . . . . . . . . . first stewie kills Lois and then it doubles up with the 101th episode where Lois comes back from the dead and trys to kill stewie then stewie becomes the ruler of the world and then Lois goes all sexy commando and has a f*****g awsome fight with stewie ending up kicking the s**t out of him then it turns out it was all imagination and stewie says "if that's what happens if i were to kill Lois then i better not" and then credits roll
No.
He started the series trying to kill her but that storyline has been dismissed over the seasons. Presumably he has gone from hating her to liking her or at the very least being neutral with his feelings for her.
Stewie Loves Lois
Lois Griffin
the 100 episode was stewie kills Lois now the next one is Lois kills stewie
The 100th episode was Lois Kills Stewie. Everyone is shocked that Stewie would try to murder Lois, but she insists that he is evil, and explains what happened; after being shot at and falling overboard, she was rescued by a merman, and became employed at a fat camp and later a diner, where she found a new boyfriend in a white supremacist also visiting the diner, as she had developed amnesia. She eventually regains her memory after being attacked at a supremacist rally, and returns to Quahog. While Lois explains her situation, Stewie escapes, captures and restrains his family when they return home, and shoots Cleveland dead when he visits. Stewie kidnaps Brian and forces him into driving him to the CIA, where he gains access to asupercomputer and takes control of the planet's power grid, thus dominating the world. After Stewie implements numerous draconian laws, Lois becomes angered and prepares to assassinate him. Lois and Stewie engage in a fight at the Oval Office when she arrives; Lois eventually gains the upper hand and prepares to shoot Stewie, but she cannot bring herself to do so, since he is her own child. Stewie takes the opportunity to disarm her and prepare to kill, but is shot dead by Peter. They then start to cry over Stewie's dead body and are devastated. Just before Peter and Lois leave the room, it is revealed that much of what has happened was actually a computer simulation. Brian is upset the whole thing was a "dream sequence", although Stewie argues that a computer simulation is totally different. Stewie then claims that he is not ready to kill Lois....yet.
The first is called 'Stewie Kills Lois' and the second 'Lois Kills Stewie' (UK Season 7/US Season 6). I'd get the DVD because the episode 'Stewie Kills Lois' includes a clip that was banned from TV where Stewie sings the song 'I've Got a Little List'. It's brill!
Lois