More to add to my list (I'll come up with even more as the week progresses 😉)
Euphemisms on conference calls. "Sorry, can you repeat that? I was multitasking." No, that's code for "I was so bored by your conference call that I decided to go screw around on Facebook or play Angry Birds on my phone, and I wasn't paying attention, and now you need something from me and I have no idea what the hell you were talking about for the past 47 minutes." "Give me 5 minutes, I need a health break." Just say it - you have to take a piss. If we were conversing in person, you'd probably say to me "Gimme a sec, I need to use the john." Health break? I never heard that phrase until I entered the corporate world. Why so PC on the phone?