ISM

ISM is commonly used by people who like to sing especially on occasions.

ISM is commonly used by Shell and Petron

It's Shell Mabait = ISM

Petron: Where'd you usually used ISM?
Shell: Sometimes when I talked Akoism.
Akolism,Makulitism,Mabaitism, & Magandism.
Edcyl: Edcylism and Carloism.