hipponut 

a 3 second moment when a hippo either ejects its sperm into a river or stream

i saw a hipponut

hipponut by kirito96 March 23, 2019

hippobutt 

As made famous by the Jr./Sr. High Drama Classes at Edwin Parr Composite High School in Athabasca, Alberta, Canada.

A word yelled at an unexpected time, causing massive fakes of seizures, also fondly referred to as an animal on fire.

Principal (at assembly): Reminding you that...

Drama teacher: Hippobutt!!

Students: Ahhhh!! (pretend seizures)

Principal loses concentration of assembly.

hippobutt by Ryan "Danger" Powers November 1, 2008

hipponatamus

hippo is a large animal and with a persons name mixed in with it turns into a insult......

hipponatamus meaning fat over weight girl called Nat can be used as a insult

hipponatamus by pige123 January 5, 2012