Answer:
I am the yellow hem of the sea's blue skirt.
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
Consuming food would be pretty tough without these chompers
You roll it or you buy it, People say you shouldn't try it, Because you may get a stroke, From inhaling all that smoke.
What goes trough your head but you forget it like 3 days after?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?