A "barooroo" is an animal that is extremely lazy. Although this term is mostly used for dogs it can also be used for any living thing including humans. If a human is a "barooroo" then he/she probably sleeps most of the time or takes the easy way out of situations.
freind: hey bro! do you want to go study for our book reports?
barooroo: no, im just going to watch the movie for my book. and then sleep until dinner.
freind: dude! its worth like 50% of our grade for this semester.
barooroo: i dont care.