there is no actual sex act called a "dirty dutch," but you mention it to make a naive friend believe there is
basically, you say you did the "dirty dutch" the night before and then mention it's nastier, dirtier, and sicker than the vilest sex act you can think of
Afrojack is currently the most popular Dirty Dutch producer, and is leading it's uprising popularity.
What? What's that?
It's hard to describe...lookup on youtube "Top 10 dirty dutch" and it'll give you an idea.
Alright I'll do that!