An epiphany of hopelessness. Used when
someone strives to conquer life but becomes increasingly doubtful, lost, and unsure.
Eventually, when all
hope is lost, "blehhhh" is sighed with distress and frustration.
person talking:
"Wow! I felt really productive today. Except,
maybe I forgot pay the bills, call my
girlfriend, feed the cat. Never mind, the cat ate my
goldfish. blehhhh."