Stewart "Stewie" Gilligan Griffin is the flamboyant and eccentric one year old infant of Peter and Lois Griffin. Mentally, he seems much older, even proclaiming in "I Never Met the Dead Man" to be shooting on a fifth grade level. Stewie is well-spoken, with an advanced vocabulary, an upper-class British accent and an ambiguous sexual orientation. He refers to Peter often as 'The Fat man' and.