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Used in Bahrain as a written expression for the sound of cars honking to the rhythm of the Arabic protest chant for "Down with (King) Hamad" (Arabic:يسقط حمد, yasqut Hamad).

Term originated in 2011 during pro-democracy protests against the monarchy in Bahrain following 14th-feb-2011.
The sound of tn tn ttn was deafening at yesterday's protest!
by YasqutHamad October 24, 2011
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