Mushy bisquit is a game associated with bukkake, where multiple men start jerkin their meat at the same time over a fresh bisquit. Each member tries to blow their load as quick as they can onto the bisquit. The last person to spit white rain on the bisquit has to eat the (now) mushy bisquit.
I walked in on my gay roommate, Derek, playing mushy bisquit with his fag friends. Homo.