chubby / fluffy / chunky / chucky
So my neighbour made it clear. You shouldn’t say: “what a pretty chucky baby”. Chucky is the puppet. Chunky is for cookies, or for your baby’s arms. Chubby is a synonym. They both mean “fat”, but not greasy. Nice fat.
sassy / savvy / sexy
I still haven’t figured which one is positive and which one is negative. But that as long as I cannot pronounce properly “sassy” and “sexy”, I should avoid using them, especially when talking about my 3 year old-daughter.