Haha, the evolution of my username is pretty original, other than the fact that my actual last name "Ho" is used in nearly all of them.
Ho-Ho > Ho-Factor > Ho Sensei > ? > Hoffy
Basically, it all started from the little snack that Hostess makes. People tend to call me that every once in awhile that knew of the origin. Eventually, some of my buddies that used to be in Boy Scouts called me the Ho-Factor, because I apparently have the nerve to do anything or something.
Ho Sensei just randomly came out, as I felt it was appropriate to be dubbed as humorously "Ho Master" but in Japanese. Eventually, Hoffy was derived during Oni-Con 2006 when people nicknamed my trademark Luffy cosplay with my last name.
Cosmic sparked even more intrest in the choosing of my username when she posted an image of a hotdog brand in my intro thread nearly a year ago. XD