Grouchology (course)



 Earliest Known Appearance: Episode 4260 GROUCHology is a course taught at Putrid University  ( P . U . ) as shown in Sesame Street  episode 4260.

The course is taught by Professor Nikola Messla  ( played by  Jason Jones  ) & the  Pesties  ( performed by  Joey Mazzarino ,  Leslie Carrara - Rudolph  &  Matt Vogel  ) about the goals of the GROUCH ology  online school.

 OSCAR THE GROUCH  takes this online GROUCH ology class from the college , learning how to be a  GROUCH  scientist. Messla instructs  OSCAR  at  his   TRASH CAN , via webcam , helped by the  Pesties.

TV / Movies / Specials

 * SESAME STREET ( 1969 - present )


 * Episode 42 60 ( 2 011 )