BBiwy 

Big Brother is watching you.

Derived from George Orwell's novel 1984 from 1949 in which the 'Big Brother' is a theme that stands for the absolute surveillance and monitoring of people by their own government.
Nowadays one can use it to tell some one to be careful what he or she does, because he or she is always being watched (most of the time by the one that tells him BBiwy).

Don't even try to meet Janet. I'll find out anyway. BBiwy.

BBiwy by synbi0nt July 3, 2009

BBIW

Big Brother is Watching.

Big Brother is the authorities, as denoted in George Orwell's novel "1984." It can be the government, your boss, the establishment.

You shouldn't send such personal information on an e-mail. BBIW, you know.

BBIW by Dakota Ponger July 27, 2008

biwythmk 

This means “Baby I want you to have my kids”

Shawn: “hey, biwythmk”
Sam: alright bet 😏

biwythmk by BIWYTHMK February 3, 2022

bbiw

Be back in a while.

"I gotta take a dump,bbiw"

bbiw by NØØÐL£§ January 9, 2009

BSIWY 

Acronym for "Big Sister is Watching You." Inspired by George Orwell's book 1984, it's a useful word to remind little sisters that their big sisters are always looking out for them.

"my sister uploaded this totally inappropriate picture on to the internet, and I was like yo BSIWY and she took it down."

BSIWY by g f b April 15, 2008

Bbwym

Acronym to Bitch better watch your mouth

Girl 1: you’re a dumb one
Girl 2: bbwym

Bbwym by Mehas February 13, 2020

BBIW

Big Brother is Watching. Big Brother is the authorities, as denoted in George Orwell's novel "1984." It can be the government, your boss, the establishment.

"You shouldn't send such personal information on an e-mail. BBIW, you know."

BBIW by Dakota Ponger May 20, 2008