Nyanyako Star

Disgraceful as it may be, grandmothers were a necessary and very effective ingredient in childhood taunts. Innocent grandmothers found themselves at the heart of barbs such as 'Nyanyako kibogoyo lakini kwa kukula mifupa mwachie' and 'Nyanyako kaguru lakini kwa kudandia lorry mwachie'. The very best was a song composed specifically to jeer at friends and foes whenever the need arose, and you guessed it, granny was its subject. It went like this:

Nyanyako star! Star!
Anakula fish! Fish!
Uji na koo! Koo!
Ananyamba tiririiiiiii riii riiii riiiii
Ghostbusters!

Johni Kibogoyo

There was no better way to silence an opponent in a competitive game (or to wind up an argument you were clearly losing) than to whip out Johni Kibogoyo. The only modification needed was to substitute 'Johni' with the other kids name.

Johni Kibogogyo, alihara kwa mkebe
Akasema ni wageni
Wageni wakasema
Ni Johni Kibogoyo!

I imagine that it created such vivid imagery in the victim's mind that they just couldn't help seeing themselves doing something nasty in a tin. Worked every time!