Plot (Spoiler)

When the guys volunteer to chaperone the high school prom, Quagmire hits it off with a girl named Courtney (Mandy Moore) only to discover that she is his daughter after she says “Giggity” and Quagmire used his Emergency DNA Test kit to confirm it. To his and the gang’s surprise, Quagmire makes a serious effort to embrace parenting Courtney, joining Peter and Meg on an ill-fated father-daughter camping trip.