"BGB" for short, this is a phenomenon which occurs generally on Sundays but may happen on a Saturday. It starts with the idea of cooking brunch, but balloons out of control with a mini-party of anywhere between 5-15 people in the kitchen cooking, blasting music and dancing. The actual food itself becomes a distraction as it's more important to be in the dance cage at this point drinking straight from the champagne bottle that was originally meant for classy mimosas. Most people call out of work the next day.
"Hey Chip, you heading over to Big Gay Brunch"? "Oh HELL no. Last week I didn't make it into work until Wednesday"