The schwa /ə/ is possibly the most misunderstood of all English vowel sounds.

Inspiring fear and awe in roughly equal amounts, this week's pog tries to get to the bottom of this elusive sound by comparing it to an apex predator fish. 

It's probably not the best metaphor, but it's still worth a listen, especially if you ever bought a "I wanna be a schwa, it's never stressed" mug.  You'll never drink from it in the same way again!