Instasteam 

Instasteam is the intense raise of temperature during sex or making out that creates sweaty conditions and steam on windows.

I had sex with my girlfriend last night and man there was INSTASTEAM !!

Instasteam by dayandficklecreatedinstasteam June 14, 2009

Instascam 

Used to describe a party or gathering that looks awesome on Instagram but actually wasn't fun

Person A: "Did you see Jeff's rager on instagram? All those girls have to be hashtag naked by now"

Person B: "Dude it was an instascam. Everybody left at 9 and Jeff's jacking off to animal planet... Did you just say hashtag?

Instascam by urbandicktionary February 23, 2013

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

Instasham 

The social media platform that provides absolutely no true information about an individual, just the fabricated existence that the vacuous Vunts want to project to the rest of the inane sycophants that populate the site. #GiveMeAttention,
#MyBestVuntishLife, #Narcissist

Katie spent the last hour and a half trying to get the angle just right to hide her double chin and to catch the light just right making her cheeks glow and her puckered lips look like a lubed anus...... Ste just slapped his cock a few times and sent a dick pic back. The quintessential exchange on Instasham.

Instasham by Samuel Peeps February 19, 2019

Instacream 

Instacream: The point of on the spot non controllable orgasm when you see someone that amazingly fit they have that effect on you

Hayley Williams, Just hearing her name makes me instacream

Instacream by Tobi Atkins August 4, 2007

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