I don't have kids, so it's not always easy for me to lecture others on how to deal with their children (or in this case grandchildren), but I am reasonably sure that it's not a good idea to use this sort of language in front of your grandson (the best stuff comes at 1:00 in - sorry, haven't quite figured out how to embed video clips yet).  Even someone with the lack of self-discipline that Bobby Knight has ought to know better.

Also notice in the clip how neither of the two anchors points out the inappropriate language.  Maybe that has something to do with how far ESPN crawled up Knight's ass when he was hanging on to break the record and keep himself relevant chasing Adolph Rupp's record for most career coaching wins.