noun
extravaginal ejaculation; pulling out before ejaculation
Slang term for the sexual practice of withdrawing the penis before ejaculation, ejaculating outside the vagina. Often contrasted with 中出し (internal ejaculation).
See also: 中出し
外出しは避妊の方法としてはあまり確実ではない。
Pulling out is not a very reliable method of contraception.
彼はいつも外出しするようにしている。
He always makes sure to pull out.