grompf
an expression with near-endless possible uses
Person 1: "When you grompf"
Person 2: "grompf"
OR
Person 1: "grompf"
Person 2: "gropmf"
Person 2: "grompf"
OR
Person 1: "grompf"
Person 2: "gropmf"
Grompf
An onomatopoeia generally expressed by cartoon characters normally after they get hurt or by grumpy people.
After stepping on a nail, the old grumpy man from the library let the word "grompf" escape from his wrinkled tiny mouth.