The funniest joke you'll hear about Egypt and Tunisia today
... is in French, from Tunisian blogger Yassine Ayari on Twitter:
L'Egypte se tunisifie, Moubarak se benalise. C'est du Djeddah vu!
This is another good pun, in Arabic, via Angry Arab
King Abdullah and all kings of Saudi Arabia have the title of "servant of the two holy places" — Mecca and Medina — which in Arabic is "Hami al-Harameen". But here the title has been changed to say "Hami al-Harameen", "servant of the two thieves". Alongside the king are Tunisia's Ben Ali and his wife Leila Trabelsi.