What is How So?
1.
-A phrase one uses when he or she wants the other to elaborate.
-A phrase one uses when he or she wants the other to explain.
Jim: I'm so much better then you at Halo!
Fred: How so?
Jim: Well, considering I play about 8 hours a day, compared to your 10 minute a day record, i have much more experience than you.
Noob.