Sharon Marsh is the lovely wife of Randy and the mother of Stan and the evil little Shelly.  Sharon and Randy have known each other since they were children and have had a happy marriage, save for a brief divorce the two had.  Sharon is identified by her short brown hair and supposed great sense of knockers.  Hey, the folks of South Park's words, not ours.

Sharon Marsh Quotes

Mrs. Marsh: You mean Stanley's missing?
Doctor: No, no, he's not missing. We justcan't seem to find him at this moment.

Randy: How does it feel to be a hundred and two, Paps?
Grandpa: Shoot me!
Sharon: Make a wish, Grandpa...
Grandpa: I wish I were dead!
Randy: That's our silly Grandpa!
Grandpa: I'm not kidding, God Dammit! I really want to die!

South Park Quotes

My worry is that he could've been following some kind of crazy new fad. Perhaps the children are all shoving tampons up their ass because they've seen the Backstreet Boys doing it on TV or something.