Yale’s DKE fraternity has apologized for a Wednesday evening incident in which frat members and pledges roamed the campus chanting “no means yes, yes means anal.”

Video of the chant was posted online hours after it occurred, and the act was denounced by campus groups ranging from the women’s center to other fraternities.

Wednesday’s chants were the latest in a string of misogynist pranks by Yale fraternities — in January 2008 twelve Zeta Psi pledges gathered in front of the campus women’s center chanting “dick! dick! dick!” while holding up a sign that read “We Love Yale Sluts.” Fraternity members were found not guilty of campus charges of harassment for that incident.