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1.
Acronym for

What's Seen Can't Be Unseen. (also: what has been seen can not be unseen) Stronger then NSFW

goatse, tubgirl, 2girls1cup should be labeled as WSCBU
"I've scrubed my eyes with a wire brush for hours, and I still have 2girls1cup in my eyes!"

"HA! payback for goatse! WSCBU BITCH!"
by SomeoneE1se April 27, 2008