Close its mouth at the speed of light?
Close its mouth at the speed of sound?
Close its mouth faster than the speed of light?
Also… wouldn’t it be heavier than the galaxy itself? So it would create its own gravitational pull that’s like extremely strong?
to reply to the question posed within the meme itself:
using the same physics which allow the creature to exist, i would create a device that consists of reflecting and refracting matter, like prisms, echo chambers, mirrors and lenses, with the overall capability to reflect and project a distorted ‘circus mirror’ holograph version of the creature at a subatomic level, which appears to be an order of magnitude larger, directly behind it.
then, when it turns around to face its new illusory foe, i would tie its shoelaces together.