A sweet person who should be treasured. An IBBY is always funny and will slow you laugh till you cry. It is rumoured that an IBBYs body has been crafted by the gods themselves, thus explaining his natural abilitiy to attract members of the opposite gender.
#1: Wow I met an IBBY in the club last night, he was so funny and great
#2: did u smash
#1: ye it was the best sex of my life!
#2: damn ur so lucky