A masive erection or penis extended to full size
Check out that dudes tromboner
by xiliyilix January 16, 2006
a person who has no life, except for their trombone, and they have bowel problems, and yellow teeth. they normally respond to the name of dookie pants
Adam and Harrison are tromboners because they have no life.
by neb and jeb February 10, 2003

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