Dabbing on a nigga is basically the modern day dance move but only doing the dance repeatedly and saying "Dab on a nigga!" over and over. It can be done after you win an argument a roast or just saying dab on a nigga for no particular reason, it can be done in any sort of context.
To dab on dem haters means to show haters that you don't need them in your life. To show them that you don't care if they hate on you, they just jealous of all that gucci stuff you have.
When you dab on a niggas dick you do the modern dance of dabbing, but with a niggas dick in your face.
Jenny dabbed on a niggas dick until cum splurged all over her face.
Reject the hate and dab to show that you don't care! Dab on the hate and show the haters that you're better than them. Accept yourself for who you are.