Liver lips

A light to mid-dark skinned black person whose lips & gums have a reddish (liver colored) hue to them. (Often contrasted with the light-skinned High yellow & the dark-skinned Blue gum blacks)

Barrack Obama, Tyler Perry, Will Smith, & "the Rock" are all a bunch of liver lips

(Contrasted against Don Cheadle, Jamie Fox, & Bryan Tyree Henry, who are blue gums; Michael Ealy, Barrack Obama, & "Drake" who are High Yellows)