What is Niggerlippin'?
1.
the act of wrapping your lips around a pipe, bong, cigerette etc etc, and gettin you'r drool and nasty crap all up on it...
yo anthony!! quit niggerlippin' that shiiiii.... dammit foo'!! i don't want you'r woman's kootch all on my piece!
See
2.
When you get the end of a cigarette, joint, etc., wet with your spit...
"Aww shit man, why do you always niggerlip it?!?"