The laugh that one uses to avoid awkward situations and/or interactions. Also, Awkha is often used to shorten, end, or completely skip uncomfortable periods of silence.
Person 1: I had a really tough day.
Person 2: Oh yeah?
Person 1: I got hit by a car, found out that I have AIDS, caught my girlfriend with my Mom, and found out I was adopted.
Person 2: (Insert Awkha here)