This is the 10277th most frequent German word.
popo
Bottom; buttocks.
Used as a colloquial term to refer to 'bottom' in a non-formal context.
Ich habe mich auf den Popo gesetzt.
I sat down on my bottom.
Used to describe a part of the body, typically in conversation with or about children.
Das Kind fiel hin und verletzte seinen Popo.
The child fell down and hurt their bottom.
Used humorously to refer to an animal's back.