attraction to ugly people
Slang term, often used in online communities. Refers to a person who is attracted to or prefers partners considered unattractive by conventional standards. Compare with ブス専 (attraction to ugly women).
See also: ブス専
彼はＢ専だから、見た目より性格で選ぶんだって。
He's into ugly people, so he says he chooses based on personality rather than looks.
ネットで「Ｂ専」って言葉を初めて見た。
I saw the term 'B-sen' for the first time online.
Abbreviation of ブス専 (busu-sen, 'attraction to ugly women'), where B is the first letter of ブス (busu, 'ugly woman'). The term generalizes the concept to any gender.