Consider this baby's mind blown. When this chubby-cheeked little girl met her father's twin for the first time, how was she supposed to react? Her frozen, wide gaze and several double-takes said it all. This was highly illogical.
Dear old dad, mom and uncle couldn't help but be amused. In the video, they do their best to tell the little girl that everything is fine. "Hey, there's two of us, huh?" says the uncle, smiling, while mom and dad laugh in the background.
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In the end, the little girl warms up to her newly-met uncle, because any man who looks like her beloved daddy must be all right in her book.

(Not exactly a grandparent.)
Image: YouTube, PhilochkoEHC