by Chris January 21, 2005
Its a combination between the words instagram and hashtag. It refers to a person that is obsessed with hashtags and writes all their comments with hashtags.
person 1: "hey have you seen the comments in Lisa's pictures, they are all hashtags"
person 2: "yes, she's a instagater
person 2: "yes, she's a instagater
by kohaku_bambi June 26, 2013