And Who Is the Donkey of A Customer Who Is Dressed Up As A Captain?

Translation / Interpretation / Caption Text / Source
Hebrew translation: (text in colorful letters): When Adar (Hebrew calendar month) comes, we increase joy! (text at bottom) And who is the donkey of a customer who is dressed up as a captain?______________________________Translation courtesy of Leena Dallasheh
Hebrew
English
Admin Notes

http://www.palestineposterproject.org/poster/translation-in-progress-aug...
I really don’t get this one!
The colorful letters: “when Adar (Hebrew calendar month) comes, we increase joy”
à(the original is a religious thing relating to Purim, I think. Except the word for increase in replaced by a word that could mean “to mate.” Google search shows that used in some places, so not sure what that’s all about.
Bottom line in poster: and who is the donkey of a customer who is dressed up as a captain?”
Lahav 2009