To force fellacio on a friend, usually a best friend, while he is sleeping. If the friend wakens, a brandoneiser often times hides his cum guzzling ways by prentending to be 'sleep sucking,' and responding with phrases like, 'what is going on; gross!"
Dude, I fell asleep while watching MTV. When I woke up my buddy was brandoneising me like a wild man. I started to say something, but decided to pretend I was still sleeping so he would finish brandoneising.