Tongue A thorn?

Five senses with cause,
Complex muscle with membrane so mucos,
That tastes and swallows,
A verbal cyanide with deathly hallows,
Neatly hidden with ivory gates,
Drawing a keen heart to hate,
Let alone to tame,
As it plays it slip side of nature,
Which tends to be tricky,
Bringing risky,
And if you're compulsive,
Talk less,
As Diligence be relentless,
Though volatile be vital,
As it is lethal,
So,
Posses a conscious muzzle,
For your mouth muscle,
Think first to prevent hurt,
Even in accurate situation,
Or exaggeration,
Start today,
"As early as a made hay"
Then permanetly.