Top definition
essentially someone who looks beefy in a tshirt, fills the sleeves, but is non-the-less a fat guy in reality. Hundreds of shirt fillers go to your local gyms.
girl: "that guy is jacked!"

Boy:"no actually, come beach time you would realize he is just a shirt filler"
by junbeh May 13, 2012
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Dirty Sanchez Plush

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