The minute the first few notes hit the air, Staas whooped and catcalled. He recognized the song, very easily. He may have been the ripe-old age of twenty-five when it debuted, but that hadn't stopped him from listening, nor from learning all the words. He was a fan of almost all music, after all, and no matter what else The Backstreet Boys may or may not have been, they were fun. He had even, alone in his apartment and with nothing better to do, learned some serious dance moves thanks to the internet, entertaining himself and, later, others with his rendition of the song.
So as soon as the chorus piped in, Staas was up and out of his chair, dancing in place and singing along, kissing Alida's cheek and smiling as Theo started bouncing in his chair. By the time the song got to the second chorus, he was closer to the stage, just in front of it, actually, with his eyes easily still on his kids (who were all of five feet away, with how close their table was to the stage) and performing his own dance moves. And then, in his excitement, he actually jumped up onto the slightly raised platform, and begin dancing with the guy in the awesome outfit. Because seriously. Fun!
He grinned at the guy, hoping he didn't mind, already a bit breathless and loving it. He did an enthusiastic move, limbs flailing everywhere, and saw Alida grin and wave, so he waved back.