The cylindrical cardboard center of the roll of toilet paper, so called because if you put it to your lips and make a sound like a trumpet, you say "dut-dut dut-dut."
Be sure to throw away the dut dut when you put the new roll of toilet paper on. Also, we needed to bring a bunch of dut duts to school to make an art project.
by Elsbeth January 24, 2007
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1. a verbal subdivision said in preparation of releasing a toss of a rifle or sabre in colorguard, auxillary marching band, or winterguard

2. to be in the process of leaving, or have left
1. "you will hold 5, 6, 7, dip on 8, release on 1. And 5,6,7, dut dut out"

2. "this place blows, you ready to dut dut out?" "i'll call you tomorrow, dut dut out"
by jbcavie April 6, 2011
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