TIWWP 

Thread is Worthless Without Pics; generally used when someone posts a topic where pics are required to gain the full effect

A poster posts a thread about hot women, yet fails to post pictures of said women. One who replies would say, "TIWWP".

TIWWP by Xanis January 25, 2006

TIWWCHNT 

TIWWCHNT is the acronym for This Is Why We Can’t Have Nice Things which is a song released by Taylor Swift in her 2018 album reputation

Grace: Hey Tom have you her TIWWCHNT yet?
Tom: Ya! I loved it!!

TIWWCHNT by Thomas.013 March 22, 2019

TPIWWP 

This post is worthless without pictures

Well, TPIWWP, you post whore.

TPIWWP by EdP November 11, 2003

TTIWWP 

This Thread Is Worthless Without Pics

Person A: i met this hot bangin girl tonight.

Person B: ...

Person B: TTIWWP

TTIWWP by Zee from ATOT September 8, 2005

TPIWWP 

The Post is Worthless Without a Picture

Usually a response to a post about a particular experience that a user has, but not worth mentioning or believing without a picture!

TPIWWP by dvs fore August 13, 2003

tiwwaf 

Stands for "this is why we are friends".

Person: I dressed up as pikachu and ran around town screaming "tacos!"

Person 2: TIWWAF

tiwwaf by meowmeowzazzycat February 15, 2012

TIWPK

Short form of This Is Why People Kill.

Originated in a reddit thread regarding design, now also a subreddit (r/thisiswhypeoplekill).

There's an unfilled row of pixels below that rectangle. You know, TIWPK.

TIWPK by eydryan December 13, 2012