(noun) An overweight or obese
male that in spite of his physical condition is sexually appealing, especially to fit, attractive members of the opposite sex.
(adj) describes an overweight or obese male that can attract
beautiful women with charm,
intelligence, or character.
"John hooked up with ANOTHER girl from the
club. He weighs 80lbs more than me and has had four dates this month. He is obeast."
"What an obeast. I can't believe that
chubby dude is making out with that hot
chick."