I heard this word. I hope you are well "booblano". Is that just a fun made up word? or does it mean something? Děkuji vám předem.
In which context? You will have to tell us something more, because such Czech word doesn't exist. It sounds (to me) similarly to the word "bublanina" which is a kind of pie.
" IMHO, it is spelled "bublino" and it means a bubble. In the context, it is apparently used as a jocose salutation referring to the chubbiness of the addressee.