Rapper Shawty Lo -- famous for "Dey Know" -- died early Wednesday morning in a car crash.

The 40-year-old was driving a 2016 Audi in Atlanta when the vehicle struck 2 trees. He was reportedly ejected from the car and was pronounced dead at the scene.

Just hours before he posted videos of himself in an ATL strip club.

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In 2008, he snagged Rookie of the Year BET Award.

He also founded the group, D4L ... famous for "Laffy Taffy."