Instastuck 

The inability to get off of Instagram.

Unable to close the Instagram App.
When one is stuck in his or her current physical state or location due to being on Instagram.

My husband has been instastuck for over an hour…can’t get him out of the bathroom because he is on Instagram.

Instastuck by Hipmomma January 23, 2023

Instastalking

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.

Instastalking by DoubleM_2000 June 9, 2014

instafuck 

a describing word for a guy/girl you would fornicate with, without any hesitation. One glance, fuck me. That simple. Can also be used as exclamation.

Instafuck can NOT be used as a verb (See Instafucker).

A: Did you see Justin Timberlake in The Social Network?
B: Hell yeah, instafuck!

*hot girl walks by*
INSTAFUCK!

instafuck by ED3ers March 16, 2011

Instacuck

When someone receives sexual pleasure primarily from someone else's social media pictures - especially Instagram - with or without having any other kind of relationship with that person, especially when the person who the social media account belongs to is openly in a sexual relationship with someone else. Essentially, when someone cuckolds themselves via another person's Instagram.

"As a popular dominatrix, I have dozens of men every day admit to being my instacucks!"

Instacuck by NovaleeSnow August 30, 2019

Instastalk 

verb:
To stalk someone on Instagram.

This is a development from the traditional Facebook stalk, as there are many more users that will allow their Instagram account to be public, and therefore open to Instastalkers (noun).

I know she goes to the gym, because I instastalked her.

I've made my Instagram account public, so everyone can instastalk me.

Instastalk by Buggiful January 30, 2014

Instastalking

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.

Instastalking by workoutsbymanny June 12, 2015

instafuckable 

When you see a man/woman and decide you could have sexual relations with them, regardless of their personality or physical appearance.

Maria: Theo is such an ass whole.
Annie: Yeah, but he is like a 10 - he's instafuckable
Maria: That's true - get on that!

instafuckable by JMcMahon December 3, 2011