Welcome to Buster Bluth's bizarre pottery class. He has only one rule the students must abide by: No Ghosting. Unfortunately, Jeff's competition with the other "good-looking cool guy" in class causes him to break this anti-Patrick Swayze rule.
Jeff's competitive streak led him to stay up all night trying to expose the attractive guy as an expert on pottery. Jeff completely loses his cool and ends up breaking the golden rule of the class...
My favorite taboo joke of the whole episode had to be the Patrick Swayze poster on the wall that reflected the class rules:
"I had it made before he died, it's not in bad taste."