WCW, or Woman Crush Wednesday, is a term used on Instagram, particularly for boyfriends, as an excuse to post a picture of their girlfriends to get likes on Instagram, along with a sappy love comment in the description. This can only be done on Wednesdays however, as mentioned in the name. Some girls often also use it for their best friends on Instagram, as a way of showing how great of a friend each of the two are to each other.
Becky! Xavier just posted a picture of me for WCW
"Why did she put up that picture of us for WCW
as if we were friends? I hate that douchebag
of a person she is."