noun
lucky charm man
Vulgar, jocular slang for a man believed to bring good fortune to a woman he is close to or has sex with. Often used in a teasing or self-deprecating way.
彼は自分を「あげちん」だと言って笑わせた。
He made everyone laugh by calling himself an 'agechin' (a man who brings luck to women).
ネットで「あげちん」という言葉を見つけた。
I came across the word 'agechin' online.