That's completely appropriate.
As long as you're not yelling anything about a player's ethnicity/religion/cultural background/sexuality, his family, or some personal tragedy he has had in his life... it's all fair game.
Speaking of Duke, since they were brought up in an earlier post and are pretty much the gold standard for student section hecklers, here's a decent link to some of their work:
http://espn.go.com/page2/s/cameron/hits.html
I thought this one was really good:
During an exhibition game against an Australlian team, a 5-7 visitor, preparing to shoot free throws, was serenaded with "Shrimp on the Barbee!"