"Hey, why are you going over our grades with us instead of our academic advisors?"
The dean in Necessary Roughness is in the process of shutting down the football program of a major college, which would be a feat slightly more impressive than teleporting the entire school to another dimension. Hell, the dean in Patch Adams has the power to punish Robin Williams merely for being too happy.
But in reality, the power of these administrators isn't that big of a deal, mostly because there are so. Many. Deans. The title of dean is often honorary, and deanships come with so few actual responsibilities that schools hand them out like particularly easy scout badges to their senior staff members. In plenty of colleges, there are now deans for every silly department. In real life, if a club/frat/sorority was doing dangerous or stupid stuff, they'd probably have to deal directly with a faculty advisor, who would then probably report to some kind of designated disciplinary group, who would probably then report to some other board. Even worse, there are real deans out there who hate that they're now deans instead of professors, because they're totally unable to do anything they wanted to. The red tape they thought a dean could clip had more red tape behind it. So sure, don't fuck around with a dean, but mostly because they're likely miserable enough already.