Roseanne Barr spewed vile and racist tweets last night, after hearing that her show was canceled when her racist tweet about Valeri Jarret kicked up a social media storm.

The comedian also blamed Ambien for saying Jarrett looked like the lovechild of the ‘Muslim Brotherhood and Planet of the Apes’ before saying she ‘mistakenly thought she [Jarrett] was white’.

In the hundreds of nasty retweets, Barr let her prejudiced views show, in an alarming Twitter fest that went late into the night.