Here are a few choice ones from around the office:
"NG_alvz@hotmail.com (NG stood for nerd girl, of course). Even more embarrassingly, my first choice was email@example.com, but I decided against it as underscores were cooler. "
"firstname.lastname@example.org. d for Dan. ocean + sky because I liked those things, and together, they sounded vaguely like my last name and AOL.com because my parents thought Hotmail sounded sketchy."
"DestNed4HeaVen@aol.com because...Southern Baptist."
What was your first email address?" Was it embarrassing? I bet it was. Add yours in the comments and explain what the hell you were thinking when you signed up for it.