BOSTON -- There is a new crackdown at Tufts University -- of the X-rated variety.

The Medford college's new guest policy, revised from last year, now includes a section that bars students from "engaging in sexual activity while their roommate is present," WCVB-TV in Boston reported.

A Tufts spokeswoman told the Boston Herald that the 8,500-student university has fielded about a dozen complaints from frustrated students who said they've been put in uncomfortable situations when their roommates have entertained guests.

The policy does not lay out any consequences for violating those rules. The school said it realized it did not have a clear policy addressing such situations.

At other Boston-area universities, there are a variety of policies, from Boston College's outright prohibition on "cohabitation in our residence halls" to Harvard's policy discouraging "serious or persistent unwanted sexual conduct."