grumpapuss 

Grumpapuss- the sourpussed face a child makes when they're throwing a fit.

Also a bad attitude

Sophie was a real grumpapuss, did you see that fit she threw?

grumpapuss by Jmama3 February 22, 2017

grumpass 

someone who is always negative and never
is happy

Why are you being such a grumpass?

grumpass by tigger August 10, 2003

grumplepuss 

A sexually interested river dolphin; that through which the theory of relativity has been proven to of been in existence throughout the 19th century, in rare areas of the island of St. Lucia. An interest in the grumplepuss was sparked in the 80's after a hit song "Grumpuss 'n da Basement" by Nelly. It was released on his album Country Grammer.

"Arkantose disregarded the grumplepuss's lust and kept on swimming!"

grumplepuss by William Hart February 26, 2008

grumpuss 

a legendary mythical beast renowned for it's grumpy disposition

dude you're being such a grumpuss today

grumpuss by freggles March 18, 2011

grumpypuss

grumpypuss (mood)
this is a mood when a person is having an attitude and being bitchy and in-fun

don’t be a grumpypuss

grumpypuss by gremlin_gal December 2, 2022

grumptapus 

A grumpy pussy cat

The cat is a grumptapus

grumptapus by Str0x November 5, 2013