When something is not as good as it should be, not cooked enough, not solid enough, almost rubbery or jello like.
Man, this pizza is flibbly, I told the guycrispy for Christs sake...
His dick was flibbly, he was having a different kind of hard time with it tonight.
An expression of annoyance used instead of the word 'shit' 'fuck' etc.
Oh flobbyknockers! I just remembered I've got an appointment to have a Brazilian bikini waxdone and I've worn my giant-Granny pants with the holes in them.