What is Allah'u Ackbar?
Arabic for "God is great". A common expression and often used as a prayer during times of relievement or desperation in Muslim societies. It is also a common war cry of Islamic Fundamentalists where it became imfamous to Westerners and associated with terrorism. Saying it in America or Canada is considered taboo despite its meaning.
Mother: I thought I lost you! Allah'u Ackbar! Stay close next time!