Like swearing something on the holy bible,if you say bib after telling some something you’re definitely telling the truth ;it could also be used as a way of agreeing with someone.
1st way to use it: rocky:”omg Tracy I’m pregnant”
Tracy:”Say BIB “
Rocky:”BIB”
2nd way to use it: Brody:”dude whales are so unattractive”
Scott:”Bro bib”
Sexual act which has one partner being used as a "bib" while the other partner eats a messy meal. The act generally consists of one partner wrapping their legs around the others head while the other eats bbq. The "bib" is there to catch reminints of fallen food and sauces, which are later eaten or licked from said "bib." Both partners are encouraged to take part in cleaning of the "bib".
Example; Joey turned down the offer of extra wet-naps at his favorite BBQ joint in anticipation of that nights Bibbing session with his fiancé.