Why do Japanese say “Iku” During Orgasm?

In English, orgasm is referred to as “cumming” whereas in Japanese, we say “Iku (イク)” which means “to go”. Sexual things as such do not have a reliable source explaining the origin, but one of the known explanation is that it comes from the Kanji, 逝く (Iku) which means “death”. Long ago, death meant going to the “world of peace” in Japan, so it can be said that we say “Iku!” because it feels so good at a point where we may end up in heaven. So, when you have the chance to have sex with Japanese girls, try to make her feel like she’s going to heaven!