Oh yes, to get back on topic...
I never had a nickname until I spent some time in Brazil and somehow
earned the nickname of Xu-Xu (or sometimes spelt chu-chu). Its just
an affectionate nickname for Brazilians akin to calling someone Pumpkin
in English. Xu-Xu is a type of vegetable, funny looking but with no real taste...hmm...I guess it is a rather fitting nickname
To those who don't already know, the underpant gnome (South Park) reference
is to my business of collecting pretty underpants and trying to make money