xD : wb
used a lot in instant messaging
2. Shortened form of "write back" Usually wirtten at the end of online messages/ emails, and sometimes texts as an alternative of TB
Guy: HEY! WB, i missed you, where'd you go?
"Hey, how r u, what u up to? Wb Guy"
Note: Can also stand for, but is not restricted to, "welcome back".
Dave: Fuck yeah, it's gonna be sickkkkk!