Soulja Boy Sued Over Car Accident AND Post-Crash Smack Talk

The two people Soulja Boy allegedly smashed his Bentley into are suing his pants off ... not just for the accident itself, but also for the video he posted online after in which he claimed they were racists.

Bobbiye Sullinger (the driver) and Herman Flowers (the passenger) filed a joint suit against Soulja on Friday for physical, financial and emotional damages stemming from a June 23 car accident in L.A.

As TMZ first reported, Soulja's Bentley was involved in an accident with Bobbiye's Chevy. At the time Soulja said he wasn't driving ... but later admitted he was. Each side claims the other was at fault.

Bobbiye and Herman are suing him for medical expenses, loss of income and property damage.

But get this ... the duo is also suing for defamation, because AFTER the accident Soulja posted a video on YouTube (below), where he called Bobbiye a racist and a liar, claiming she accused of him of stealing his fancy ride.

Bobbiye claims the video is filled with lies and that it negatively impacted her career and severely damaged her reputation.