boastagram 

those offensive,gag inducing and "unreadable" seasonal letters sent out to tell the world how great you and your family are doing

Unfortunately, every Christmas my uncle sends us a boastagram with the latest on his kid's successes

boastagram by sheila in the car October 31, 2008

Boastagram 

To post a picture on instagram to incite jealousy amongst friends and followers

This photo of me swimming with manta rays is a total boastagram.
Antti boastagram it (fish he's just caught)!
Michael if you were on instagram you could do plenty of boastagrams about your boat.

Boastagram by Spacedouthippy December 11, 2017

bookstagram 

A kick-ass social platform for professional booknerds - and by "professional", I mean even those who sit in their pjs under comfy blankets in a cozy place with a good book.
It's main base is on Instagram and you can see it by using #bookstagram and trust me, you'll find a HUMONGOUS amount of booklovers who share your taste and welcome you into the bookstagram community with open arms.

Person 1: Did you hear about Cassandra Clare's new book she released?"
Person 2: "OMG yes!! I bet it's gonna be all over bookstagram! I've gotta buy it and post about it too!"
Person 1: "It'll look sooo good on your shelves! Let me take a #shelfie!"

bookstagram by bookishstarlight March 4, 2017