Tell your mom/wife/girlfriend that I say it’s okay: you may slurp loudly when eating ramen.
According to Shizuo Tsuji’s book Japanese Cooking: A Simple Art:
Like sipping piping hot Japanese soup, to really enjoy noodles, one must imbibe them fast with a cooling intake of breath. To do this involves a decided sucking sound, which easily deteriorates into a slurp.
Read the full quote at Washington City Paper, it also includes a picture of a yummy looking bowl of fresh ramen. Anyone know what the green stuff is on the right? I see seaweed in there, is that spinach or just more seaweed?