Man, there may be no better disco funk than this right here.
I danced to this song in the Dallas/Fort Worth disco clubs probably 100 times from 1978 to 1981.
It has a serious funk/soul groove and a possibly an unmatched dance beat, with really cool guitar/bass/drums/harmonies.
This video is about as campy as there ever was.
I dare you to not get up and move!