LONDON -- This Irish grandmammy doesn't have Watch Mound Daughtertime for your rubbish magic tricks, kids.

In a video clip, her presumed grandson pulls off a pretty slick stunt with a water bottle, but then his granny absolutely buries him by pulling off the same trick with twowater bottles.

This glorious video is clearly staged, but that only makes it better -- Mammy's robotic "What are you doing" truly propels this video from goodness to greatness.

Watch grandmammy in all her glory:

Also, can we talk about the shades inside?

CLASSIC.