While “mental retardation” was originally introduced as a medical term in 1961 for people with intellectual disabilities, in the decades since, the R-word has become an insult used all too commonly in everyday language. Those who use the R-word often do so with little regard for the pain it causes people with intellectual disabilities—and the exclusion it perpetuates in our society.
Taken from specialolympics.org
So just call them assholes or cunts - get creative
Ouch... edited and thx.