In EETimes, I found the 'ghoti' (=fish) joke which Nujoom had told us.
On similar lines, there is one for "potato".
It's murderous, but here goes:
Ghoughpteighbteau = potato, because ....
Ghoughpteighbteau: Gh as in hiccough, ough as in though, pt as in ptomaine, eigh as in neigh, bt as in debt, eau as in bureau.
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Regards,
Satyajit
El arroyo de la sierraMe complace más que el mar