Shelly Marsh claimed she could sing a better song than The Lords of the Underworld. shut up, turds ! She is extremely ill-tempered, often beating Stan up and calling him and his friends "turds". Meanwhile, Kyle becomes annoyed after Mr. Hankey and his family moves into his room. She's got huge headgear braces on her teeth, enjoys using the word "turds", and, mostly in earlier seasons, loves beating the crap out of Stan. Shelly Marsh is Randy and Sharon Marsh's daughter and Stan Marsh's older sister (and also arch-enemy).

She is based on Trey Parker's older sister, Shelly Parker. ♪ --and christ were there ♪ on christmas day,in the morning ♪ ♪ let us allrejoice amen … Shelly sings her 'Turd Song' with Skyler's Band. "Turds!" She is Stan's older sister, and is named for Trey Parker's older sister. From Season 03 Episode 07, Cat Orgy. Shelly Carol Marsh (sometimes Shelley) is a character in the series South Park. shut up, turds ! Despite the band's protests, she is given a chance to sing with them. ♪ --was in those ships,all three ♪ ♪ on christmas day,in the morning ♪ ♪ the virgin maryand christ were there ♪ ♪ on christmas day,on christmas day ♪ ha ha ha. Revenge of the Turds is the four episode of Season 8 of South Park: A New Era. Shelly has been voiced by Mary Kay Bergman, Mona Marshall, Eliza Schneider, and April Stewart.

Although she doesn't like her little brother, she sticks up for him when he gets into trouble, and agrees with him on many occasions. Shelly struggles through I Saw Three Ships.

From Season 03 Episode 15, Mr. Hankey's Christmas Classics.

Shelly has been voiced at different times by Mary Kay Bergman, Mona Marshall, Eliza Schneider, and now April Stewart. She first appeared in the Season One episode, "An Elephant Makes Love to a Pig". She usually calls Stan and his friends "Turds". Shelly is Stan's older sister. was played by The Lords of the Underworld and Shelly Marsh in the Season Three episode, "Cat Orgy". They hire Harry Dorris to help the boys to get back at Shelly.

Everyone is sick of living in fear of Shelly Marsh.