Other times, it may be used as a loose synonym for A.B.E. and may or may not denote behavior between a couple that is more serious than expected at an early stage of dating. See example (2)
Similar to the academic lingo, A.B.D., All but dissertation.
Ellie and Stew are A.B.M.; they've been engaged for three years!
Jay: Zack is A.B.M.
Frank: Yeah, I hardly ever see him anymore since he started dating Kim.
"black steel is gunna fuck me up, no way i'd play wii with him its definatly a trap, and i definatly said steel on purpose even though i knew"
"my boy ABM"
"WHY is black metal such a miserable prick"
"ABM is teh sex0rz"
"they should just call him Adam Big Dick"
1. A TLA for "Anything But Microsoft".
2. A doctrine of using any operating system, development or application software to acheive a goal as long as the software is not designed by Microsoft nor, for some people, a Microsoft branded release of an otherwise adequate software title.
3. The notion that Microsoft products are a stability risk, security risk and/or overpriced to be worth paying for or using.
I'm not ABM, I just prefer the Mac.