From the Penn State
Daily Collegian"Fraternities that feature exotic dancers and exploit a legal loophole during rush week may soon see explicit regulations in an amended version of the Constitution of the Interfraternity Council. IFC Executive Vice President Shaun Clair said restrictions on exotic dancers and other such forms of entertainment were originally only implied.
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Lewd acts like exotic dancing, stripping, prostituting and Jell-O wrestling would be included in the proposed amendment revision.
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Because many fraternities have already booked their entertainment for the spring rush week, IFC Vice President of Membership Grant Miller said the amendment would be fully enforced in the fall semester. Some members of greek life expressed disappointment over the revamped constitution."
http://www.collegian.psu.edu/archive/2006/01/01-19-06tdc/01-19-06dnews-08.aspWhen I was in school, the entertainment during
sorority rush consisted of skits based on the Wizard of Oz or with a 50's theme like "Leader of the Pack". I'm pretty sure a Chippendales appearance would have been frowned on....