Picassobin said:
The PG era must come to an end before Cena can turn heel. His mic work is incredible but only if they let him use bad words. It seems to me that they already try to relax their rules with regard to the PG era. Promos can account 70% of an feud and even more.
PG – Parental Guidance Suggested – Some Material May Not Be Suitable For Children. These films are generally appropriate for children age 9 and older and
may contain milder swear words, brief smoking, crude or suggestive humor, short and infrequent horror moments and/or mild violence. Usually no drug use is acceptable in this category. Topless men may be present but topless women are not usually acceptable unless in an educational or scientific context or if the nudity is only shown briefly. A few racial insults may also be heard. Before the creation of PG-13, many "PG" films (e.g. Jaws and Watership Down) included explicit bloody violence. Content such as this helped lead to the creation of the "PG-13" rating.
http://en.wikipedia.org/wiki/Parental_Guidance#United_States
He can cut good promos without swearing also.