Just a few months after taking heat for describing a cold-weather Super Bowl venue as "retarded" and "stupid,", Flacco seems to have learned his lesson.
Along with teammates Ed Dickson and Gino Gradkowski, Flacco joined with the Maryland chapter of the Special Olympics in taking the pledge:
"I pledge and support the elimination of the derogatory use of the r-word from everyday speech and promote the acceptance and inclusion of people with intellectual disabilities."
Mental retardation is a term once commonly used to describe a variety of intellectual impairments, but has become more commonly used as an insult.
"When 'retard' and 'retarded' are used as synonyms for 'dumb' or 'stupid' by people without disabilities, it only reinforces painful stereotypes of people with intellectual disabilities being less valued members of humanity," the R-word pledge site explains.
Celebrity Families of 2014 [PHOTOS]