Y.B.F.S.


younger brother fat syndrome. this syndrome affects younger brothers, especially youngest brothers in a family with all boy siblings, that are significantly heavier than their older brothers.
did you see johnny’s younger brother waddling out of mcdonald’s? he’s twice the size of johnny! what a case of y.b.f.s.

did you see andrew’s brother with ybfs fall down? he’s so heavy he couldn’t even get back up! he just rolled on his back like a turtle until some fire fighters came and helped to lift him back up!

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Disclaimer: Y.B.F.S. definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.