Top definition
When you browse through someone's Instagram page for a period of time without liking or commenting on any of their photos or videos
Person A: Dude, have you seen Person C?! She is so hot!

Person B: Yeah, I know right, I spent like all of last night instastalking her.
by DoubleM_2000 June 09, 2014
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2
The act of looking through someone's Instagram without liking photos and videos. This can also be done by looking at photos the user was tagged or by clicking on people who were tagged in the user's photos.
james has been Instastalking Aly and he is currently 106 weeks into her Instagram.
by workoutsbymanny June 12, 2015
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