What Does "b" Mean in Texting?

In text messaging, the letter "b" isn't always used alone; texters frequently pair it with other letters to give it new meaning. It's arguably most seen as "bff," for "best friends forever." Another popular abbreviation is "b/c," slash optional, for "because." There's also the ever-popular "btw," for "by the way." Lesser-known abbreviations include "btaim," for "be that as it may," and "byom," for "bring your own Mac."