Post 2 videos, the first one could be an action scene, fight scene, movie clip, nature clip, game scene, etc. Pick this out with the intent of it being muted, replace its sounds with a second music video you like by playing it at the same time as the first and see how the pairing workout. Feel free to dub over someone elses selection with choices of your own, should be interesting to see how drastically different another song can change the tone of things.
Here's a generic example:
Don't forget to add in any timed links if you want a certain part of either vid cued up to one another to stay on beat(a little excessive, but would be appreicated). Sky's the limit with the creativity here, you could dub over anything from news anchors broadcasting to trap music, making it seem like they're casually conversing explicit rap or simply dubbing over another person music video to give it a new spin.