Nagmar

1) A smart af guy who knows they the shit

Eg. Yooo Sabrina just got 100%

2) The light that gives you your knowledge
Eg Steve: What was Einstein IQ again?
Logan: Like 160

Steve: that guy must have had hella nagmar!

Nagmare

An unpleasant dream that can cause a strong emotional response to your spouse/partners persistant annoying and irritating fault-finding or urging to do chores...

I had another Nagmare last night about improper stacking of dishes in the dishwasher.