(CNN) - Special Olympics CEO Tim Shriver is asking Rush Limbaugh to watch his language.
The request came two days after Limbaugh repeatedly used the word "retard" while talking about White House Chief of Staff Rahm Emanuel's own reported use of the offensive term to bemoan liberal activists during a closed-door meeting last year. Emanuel’s comments, first reported in the Wall Street Journal last month, were reportedly directed at liberals opposing President Obama's health care plan.
"Our political correct society is acting like some giant insult has taken place by calling a bunch of people who are retards, 'retards," Limbaugh said of the report on Wednesday's show. "These liberal activists are kooks, they are looney tunes."
"I am not going to apologize for it, I am just quoting Emanuel… So now there is going to a meeting, there is going to be a retard summit at the White House," Limbaugh also said.
In a letter to Limbaugh Friday, Shriver asks the talk-radio host to take a pledge to no longer use the word.
"In my own experience, when I ask people – be they first graders or media figures – to join in stopping the casual use of the word 'retarded,' they universally agree to do so," Shriver writes in the letter. "Most want to go further: They want to understand better how they can serve as agents of acceptance and dignity."
The letter came days after Shriver and four other disability advocates met with Emanuel at the White House to discuss his alleged use of the word.
"We are thankful to Mr. Emanuel for meeting with us today and hearing our concerns," the group said in a joint statement following the meeting. "He sincerely apologized for his mistake and the pain it caused in our community."