People are now similarly criticising Beyonce. Disability charity Scope are asking Beyoncé to re-record the song, without the insult.
"Words matter because they reinforce the negative attitudes disabled people face every day," media manager Warren Kirwan told the BBC.
"Beyoncé has long been a champion of inclusivity and equality, so we'd urge her to remove this offensive lyric."
Meanwhile, here is some of the reaction on Twitter:
\u201cSo @Beyonce used the word 'spaz' in her new song Heated. Feels like a slap in the face to me, the disabled community & the progress we tried to make with Lizzo. Guess I'll just keep telling the whole industry to 'do better' until ableist slurs disappear from music \ud83d\udc94\u201d
\u201cBeyonc\u00e9 is a queen I love Beyonc\u00e9 she is my favorite singer of all time #spazz is still a slur it doesn't change because one of the greatest women ever born used it #DisabilityTwitter #DisCo\u201d
\u201c@hannah_diviney @AutisticCallum_ @Beyonce I\u2019m shocked that people still say this word, I remember it being around as a child but not anymore . I know in America they have a different POV but when you are world selling artist and want to sell internationally you need to have understanding of the words you use\u201d