Emoney. It stems from my job. My first name is Ethan, and one day I forgot my name tag. So my friend printed me out another one, but because of a label-maker fail, it said .ETHAN$$.
I'm also known in some circles as "Cttm" and "Etnan" because of my terrible handwriting.
Also, Ethanol and ethanoil, for obvious reasons.
Oh, and Big E. That's what they called me when I played football, because we had two Ethans, one large and one small.
And let's not forget E-Diddy, E-Dids, E-dub, and Busta from when I was a freestyle rapper. (NOTE: I did not give myself any of these nicknames. I just have idiotic friends.)