Basically to be screwed. Originates from a YouTube video parodying the NZ accent. Made by a pair of Australians, the video shows a cartoon whale 'beached'. He says to a passing bird 'Oh no man, I'm beached as!'
Botched B is one of the nicknames of the flop rapper Cardi B wich has a botched face. As her singles tank, she doesn't have enough money to pay for actual surgery so she paid a random girl that lives on a motel to put Elmer's glue on her face.