The music video for Take On Me by Aha uses a technique called rotoscoping, which is where you take live action footage and draw or paint over it to make it look like a cartoon. If you look up the video, it should be pretty evident what the relationship is to the meme.

You likely already know this part, but "an A-Ha moment" is an idiom that refers to a sudden insight or realization, and here is a play on words, invoking the music group mentioned above: It's an "A-Ha moment" not due to a flash of insight, but due to temporarily(...?) taking on ~~me~~ the appearance of being rotoscoped.