Grammarazzi 

A grandma that is always taking pictures. At all the events she's in your face with her camera, and will post the pictures no matter how fat you look.

Hide! Here comes Grammarazzi!

Grammarazzi by Nikangelle July 28, 2017

Grammarizing 

The act of openly correcting someone else's improper use of grammar in front of others, oftentimes at a social gathering.

I said "her and I" instead of "she and I," so she started grammarizing me at the party.

Grammarizing by MCMcP January 25, 2014

grammarnazi

A person who corrects people's spelling/grammar mistakes on the internet.

Person 1: Their so gay.

grammarnazi: You're using the wrong form of they're. You are supposed to use they're, which is a contraction of they are.

/grammarnazi

grammarnazi by grammar nazi is wrong! April 1, 2010

gramparazzi 

A grandparent who takes endless photographs of his grandchildren or boring holidays.

My grandfather is a gramparazzi...he comes over and shows us a thousand photos of his trip to Yosemite. Then he takes a hundred photos of me and my sister.

gramparazzi by black@heart December 27, 2011