a verbal reaction to a dimwit who has either said or donesomething to display what kind of simple minded thickheaded witless idiotic moron they really are.
A merb ,straight or gay who gobbles the knob(s) of as many cocks as it can find in the immediate area. They swallow semen with the glee and excitement of someone who has just won the lottery.
Your brother is a real merb nerbler. He just sucked off the entire swim team and is out looking for more.
A word used by obnoxious people (usually named Brent) that has no real definition at all, and is often used loudly, proudly, and makes anyone who say it sound completely ridiculous.
Idiot: "I don't have anything better to say, so Ima say, 'NERKLER!'"