A person (usually a Bundu) who spends most of his life in bed or on his computer, wearing no shirt, and stalking MSA girls on Facebook. Funguses tend to grunt randomly and make other fungus noises when they haven't had any "action" in a while. They also ruin the pillows on the couch and mess up the sheets on their friends bed.
That guy is such a Fungus, he woke up at 5pm and went straight to the business school.
by Nyqra'ena October 29, 2007