sapāta
one’s fart.
While bodily fluids can generally be associated with a person, body expressions sometimes can’t. So, japāta is a popular variation, especially in idioms.
ñi sapāta;
Someone farted/made a fart. se japāta is unlikely in this context.
samma sapāta;
He’s farting. Meaning, “He’s talking bull.” samma japāta is a popular variant.