A hairy, overweight male who tends to stay up late then hibernate throughout the course of the day, waking up no earlier than dusk on an average weekday.
After awaking, a manbear's tendency's are to walk around in inappropriate boxers while his company (whether stuck from riding with "him" the night before, and or an invitee from the guest inside the den) while "he" continues to sleep.
Invitations are commonly issued in the manbear's residence while anticipating the awakening, as their sleeping cycle can vary dramatically from 10 to even over 24 hours in one instance.
Joe: Man i was fucking stuck at the manbear's place all damn day today waiting on him to come out of his den.
Bob: Damn that sucks for you i had a fat blunt of some purp, and some drank i was sippin on, i called your phone but it seemed like it was dead.
Joe: I knew this shit would happen, and when he finally came out of his cave around 8pm he was barely dressed with his hairy flab exposed and his turtle head poking out his boxers!