South Park
S1E8 — Starvin' Marvin
TMDB episode metadata
Episode title: Starvin' Marvin
Air date: November 19, 1997
Director: Trey Parker
Top billed cast: Trey Parker, Matt Stone, Isaac Hayes, Mary Kay Bergman, Mona Marshall, Jennifer Howell
The four boys are at Cartman's house watching the "Terrance & Philip Thanksgiving Special" on television. During a break from the show, a Sally Struthers commercial convinces the boys that the prospect of a free "Taiko" sport watch with a five-dollar donation is irresistible. Typical greedy American youth. So Stan dials in, using his mother's credit card number and makes their donation.
Source: TMDB