A Hot Carl is the act of defacating on someones face. A Warm Carl is defacating on their face whilst covered by plastic wrap. A Cold Carl is defacating on a glass table while someone lies below.
Suzie prefered Warm Carl's. "Less clean up afterward.", she said knowingly. John prefered giving Hot Carl's. "If there's no mess, what's the point?" Lucy liked the added security of the glass provided during a Cold Carl. "I just like watching it come out! Fascinating!"