Top definition
When something is really weird and terrifying and traumatizing in a way you can't forget. Extra points if it involves freaking out younger family members. Based on the crazy youtube video.
That murder scene in the movie was really I Am Your Grandma.

Q: Man! Why did you just run naked through that elementary school?
A: I Am Your Grandma.
by kafaboy May 15, 2011
Mug icon

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