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1. A sound made by drums that is made after a comedian tells a joke that needs a little push.

2. A sound one makes to signify that a lame joke has been told.
1. Comedian: why did the chicken cross the road? To get to the other side!
Drums: Ba Dum Tsh
2. Comedian: why did the chicken cross the road? To get to the other side!
Steve: Ba Dum Tsh!
by Dr Lina P July 14, 2009
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