It is an insult used in any way.
Man, that guy is such a Nubscrub!
by Spydurmoon May 16, 2015
A person who just loves to suck cock. Its just the best
"hot dang that chick is the biggest nub scrub I have ever fucking seen."
by The FUCKING WATCHER September 07, 2016
Alternate spelling of Scrubnub. Someone who not only is calling you a nub, but a scrub as well.
That WoW player is a nubscrub, all he ever does is call people nubs and scrubs.
by Endernian November 25, 2013