This is what had happened to Goh's student.
very funny >>
Goh's student--> William didn't attend the class
Goh asks his classmate give him a call, to persuade him attend
His classmate told Goh, the reason William cannot attend
the class because his underwear are still wet....
The next day, Goh teasing him and called him "superman"
The one and the only one underwear