A brass instrument invented in Oregon, United States and made popular by Gary the Retard of the Howard Stern Show on SiriusXM Radio.
Gary got free drinks in the bar by amusing the patrons with his skillful trumpoline playing.
by MontrealChrissy April 09, 2011
1 more definition
A hella fine trampoline with Donald Billiam Trump's gigantic face printed on it.
Hot damn! Look at the new trumpoline that Ling Ling just bought! It's like stepping on the Trumpster himself!
by feebleturtleduckk May 01, 2015