Top Definition
The shittiest car you can ever own that will make obnoxious noise when you start the engine.
Guy #1: That's one ugly guam bomb
Guy #2: I know!
by Stealf September 18, 2010
1 more definition
a old, small, cheap Guam car bought for use while stationed on Guam. Has no wheelcovers or hubcaps.
The military only ships one car, so we got a Guam bomb for a second set of wheels while we're here.
by redanan December 09, 2011

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