"Grattering", or having a "gratter" is a term for a person, who uses social networking to meet several girls, and flirt with them all at the same time... Or you can even have individual gratters. To "gratter" you have to know them in some way. It is harmless flirting that means nothing, normally, but in some cases, leads to an actual relationship.
*on msn* Gratter: "Hey baby, you were looking pretty in school today, and you're really nice...:) <3 xx"
by GratterLol May 19, 2011