**Warning -- this video is going to make you smile**
He was a 1st round pick in the NBA draft last year, but Reggie Bullock isn't too big to PERSONALLY roll out the red carpet for his mom when she comes out to L.A. this week ... and TMZ Sports has the footage to prove it!
Not only did the 23-year-old millionaire go right to the arrivals gate at LAX to greet his mother after her flight in from North Carolina ... but he crammed his entire 6'7" frame into the backseat of the waiting 2-door car to make sure she sat comfortably in the front seat.
After they got home, the L.A. Clippers player posted a pic of the two of them to Instagram with the caption ... "With my #1 #mommasBOY."
C'mon ... that's sweet.