1 definition by Shapreston

Top Definition
1) When A Girl/Guy uses their grandmother to avoid any potential romantic advances

2)When a conversation between someone and a potential date is interupted by either of the people's grandmother
Kenny: Dude i was gonna go talk to this hot girl but then she grabbed her grandmother

Orlando: Dude major grandma

Mike: I was totally about to get laid but then my grandma pulled up and gave me clean underwear

Shanon: That's grandma cockblock if ii ever heard of it
by Shapreston July 21, 2010

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