Cartman (Southpark) is circumcised, as are all the boys - they did a show where Kyle's adopted brother Ike had a Bris, and Kyle tried to send him away to rescue him as he thought it meant his penis would be cut off. The boys all learned that "it" had been done to all of them, though not as religious ceremony. The mohel tells Kyle that "we're just going to snip it, to make it look bigger". Gross. Especially because Ike is supposed to be 2 years old.
I've watched this one recently 'cause it's one that we have on the computer Here's a transcript of the episode:
love and peace.