Kanye West has been criticised by a UK charity over lyrics which make reference to Parkinson's Disease.
During 'On Sight' he raps: "Soon as I pull up and park the Benz / We get this ***** shaking like Parkinson's."
Steve Ford, Chief Executive of Parkinson's Uk said: "Kanye West has shown an inexcusable level of stupidity and cruelty towards people living with an incurable condition."
A symptom of the condition is involuntarily shaking.
Ford added: "Life with Parkinson's is difficult enough without becoming fodder for insensitive celebrities, who should know better, looking for their next big hit.
"People with Parkinson's have to cope with intolerable social discrimination on a daily basis - often to the point where they are afraid to go out in public.
"This sort of thoughtless, callous comment can only serve to make things even worse for them."
So far there's been no response from the rapper.
Parkinson's is a neurological condition that attacks the part of the brain that controls movement.
Speech, language and facial expressions can also be affected.
One person in 500 people is affected by the condition in Britain.
Most people who get it are aged 50 or over but younger people can have it too and 1 in 20 sufferers are under the age of 40.
Currently, there is no cure for Parkinson's and the cause remains much of a mystery. Whilst it doesn't lead directly to death, the symptoms do get worse over time.