The fly

 A fly's confusion is rehearsed as its direction is reversed

Only one thing on its mind, someone to annoy or to blind

Perseverant buzzing sings, from translucent talking wings

Pleasant conversation interrupts, ripe fruits corrupts

Deceptive rainbows on its head, spreading essence of the dead

Returning to where it did begin, stinging bite under your skin

Flying viper with six legs, in your food lays its eggs

In every friendly group, there's a fly in the social soup