A Grammar Hammer is someone who annoyingly interrupts what your saying to correct your grammar. He hammers you with his correct English per-say.
Teenager: Man this test is so much more hard then the last one!

English teacher comes up to teenager 1 and his friend.

English Teacher: No! What you should say is "This test is so much HARDER THAN the last one."
Teenager: God this guy is such a Grammar Hammer!
by Dr. M0 September 06, 2009

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Top Definition
A popular club in many high schools around the North West of England where students can get help with any aspect of English that they are finding a problem.
Having a problem with English? Why not go to Grammar Hammer?
by Gemma Rowlands March 02, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt