That was one of the first things that stood out to me, too.
It doesn’t show a dot, but the given score is only 0.01 difference. I suspect that a dot was actually plotted, but because they’re showing the UK dots partially covering the US dots on some other items (so they’ve apparently assigned the UK data points with a higher value on the z-axis to overlap the US data points) and because the horizontal scale is so small, it’s not displaying in that image. If it was a dynamic plot where you could zoom in enough to increase the scale, then eventually you’d probably see a sliver of a dot for the US score.
Often Said in a goofy way while holding both palms up in front of you and moving them up and down alternately - the origins do have a little bit of meaning, sort of, but the use currently is generally just a completely meaningless meme, and currently just said in response to basically any question assuming others will think it’s funny. Most people who say it don’t even know the origins. They just say it because other people do.
Crash out
Emotionally lash out or lose control or “go off” out of anger and frustration. AKA adult toddler temper tantrum or up through committing violent felonies. E.g. “I’m about to crash out”
I went to a new school at 11 and before the first day a friend clued me in to what clothes were cool. I showed up with desert boots (one of four cool shoes) with red lining that showed above the ankle.
Knock-offs are way not cool, duh.
Slipped into some brand names that night. My journey had begun.
I was only looking at the pretty colors 
Thanks
