Celi dada, mimi nunu!
— "nunu" seems to be an everyday greeting... This phrase does not appear to convey any malicious intent.

Muhe ye!
— These two words seem to indicate some sort of... positive excitement.

Ye dada!
— Very direct praise. Most likely does not have any negative connotations.

Ya yika!
— Appears to be a negative term expressing disapproval at the listener.

Nini zido!
— Seems to be an intensely threatening term.