There are four different keiffer moments , and for all of them you may refer to them as a "keiffer moment" or even "pulling a keiffer"
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Keiffer moment 1: When you mix up your friend's names and repeat them
over and over until you reach the right name
Keiffer moment 2: Whenever your walking next to somebody, speed up past them, and slow down just for them to run into you.
Keiffer moment 3: Find a way to ruin a romantic
interaction, perhaps by slamming hands on the friends while they're walking with their gf/bf.
Keiffer moment 4: Screaming while talking in the cafeteria at 7 AM, or simply yelling when not
necessary.