Gokkun is a version of bukkake in which a woman or man swallows a partner's semen or spits it into a partner's mouth. Gokkun is an onomatopoeia, which translates into English as "gulp", i.e., the sound one makes swallowing. The practice is often mistaken for bukkake.
Sarah was gokkun last night, there was nothin left..
An incorrect spelling of the Japanese word "gokkun".
'Gokken? Oh, you mean "gokkun"...'