Nit Picker 

Someone who always has to be right and is constantly correcting you

"That's wrong you fagot. The answer is 75" the nit picker said

Nit Picker by Prettylittleliars763 October 22, 2015

nit picker 

{Fussy} {moaner} {nagger} {hassler}

a nit picker is someone who picks holes in everything you do

nit picker by Prof Stretch June 23, 2006

Nitpickery 

The high crime of excessive, minute, and unusually unwarranted criticism.

Time to call The Razor, Ponce's being held for nitpickery again!

Nitpickery by indomatt239 September 14, 2008