As used for Philadelphia Collins ( RIP ) on The Trailer Park Boys, also takes on the meaning of someone with a horribly protruding belly, and T-Shirts 2 sizes too small. T-Shirts are a must for the full package, a button down shirt would probably just pop. In addition the T-Shirt must also have some image emblazened on it, such as a logo for a local eatery, or most commonly, cartoon or video game characters.
"Hey, look at Francis, he is dressed like a Mustard Tiger!" or "Francis, why must you look like a Mustard Tiger all the time?"