For those of you too young to remember, MSU is called "Little Brother" (and Mike Hart said it) because they always have, and always will, care about beating Michigan WAY more than Michigan cares about beating them. Watching MSU unravel every year after the Michigan game is a time-honored tradition; the only reason to note MSU's existence at all is to make sure we don't slip up and lose to them, thus having to hear them consider themselves equal until we put the universe back in order again.
The last four years have been excruciating to watch Michigan fans obsess over MSU; we won; now we can stop. On to OSU and the other big boys that matter. Return MSU to the irrelevance they deserve - they're a 5-5 team that obsesses way too much about their better, more established in-state rival. Don't give them extra publicity/attention and validate them any further - what annoys them the most is us ignoring them.
THAT is what little brother is all about.