long ago, when i was a skinny little thing, my cousins "lovingly" used to (and some still do) call me "lulu". it came about when i was around 8 years old. we were over at their house and they were watching hee haw. you remember, that corny redneck show from the 70's/80's? well anyway, the character lulu (an insanely fat woman) came on and my cousin pat said to me "hey! you're on TV!" - or something to that effect. everyone had a good laugh and the name stuck. there was also "dim kim" (mocking my supreme intelligence), "lashaun jackson" (named after my bff/twin brother steven "deshaun jackson" oprea), and "kimby" (for my love of gumby) but "lulu" has always been a family favorite.
