I had figured out most of the acronyms I'd seen on radw* except for YMMV. I eventually had to ask someone since I just couldn't figure it out. I guess I never really listened to car commercials enough before to make "Your mileage may vary" a standard part of my speech. (I do use it now, however.)

Oh, and I decided I was definitely a nethead when I said "LOL" outloud while laughing at something someone said.

*radw = rec.arts.drwho, my original 'net teacher.