Top Definition
(Garbage Disposal Unit) The sunroof of a vehicle, often used to dispose of waste.
Throw that apple out the GDU.
by fpadsi September 21, 2011
1 more definition
4 Words related to GDU
dese bois is a bunch of neeeeeeeeks hu beg it bad
rimsie n kronick r in gdu da neekiest of neeks
by xx_buff bitch_xx May 01, 2005

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