Free speech, free enterprise or just free rein?

English: University of Delaware wordmark (Photo credit: Wikipedia)

University of Delaware confronts two students who want to sell t-shirts that say, "U can suck our D."

http://www.delawareonline.com/article/20121214/NEWS/312140060/Students-sue-UD-over-U-can-suck-our-D-T-shirts?nclick_check=1