>>391
That's it! The word " you know what " is exactly what I was looking for.
You see, I chatted with a person from Brazil in a chat room today.
He (or she) told me that he is studying Japanese now and in the course of our conversation, he asked me if there were dirty words even in Japanese.
And I said, " Of course! Do you happen to know みみずせんびき?"
Next time when I see him, I'm going to explain what it is like, but am afraid of my being indecent if I use the word " penis" bluntly. lol

For your reference, みみずせんびき consists of two words, that is to say, みみず and せんびき.
みみずmeans earthworm, and せんびき, one thousand, respectively.
You know, it represents a type of women'e sex organ with which you can savor a kind of sensation as if one thousand of worms are moving inside it when you insert
your penis into it.
Did I make myself understood?