Bukakke is a dish in Japan with fine white noodles with a splash of topping in liquid not at all unlike loads of semen. It comes from the verb bukakkeru which means to splash some liquid (usually water).
The Japanese are very good at making poetic or funny descriptions like that.
All this mystic bullshit about Japan and japanese customs must please stop.
2. "Anh, why don't you order your food with Bukakke sauce..."