It was something to see, really.
A giant robot swinging his hips in a manner that could only be called seductive as he moaned out the lyrics to 'I Love Rock N' Roll'. Not that Spike thought that he couldn't have gone without seeing this, but it definitely had an aspect of the incredible to it. Dare he say, the surreal?
The young man had surmised that Jazz was what the 'bots called 'overcharged', but karaoke was the last thing he'd expected. For one thing, where had they gotten a mike that big. For another, why did Jazz know the lyrics of this particular song. For a third, how the hell had the saboteur gotten so good at doing that with his hips. He was undulating, for crying out loud.
Now Jazz was sauntering down off the jury-rigged stage, still crooning into the mike, and Spike got the impression that he was giving the room at large bedroom eyes. Much to approval of the room at large, if the catcalls and whistles were any indication… Spike was embarrassed by this whole display.
Jazz must have caught sight of the blushing teenager burying his face in his hands, because now the saboteur was moving among the tables toward the unsuspecting teen's perch atop the table that Bumblebee, Prowl, and Windcharger had somehow wound up occupying together once the karaoke had started. As he made his way, the mech flirted shamelessly with his audience, gripping Mirage's shoulder in an intimate gesture as he sang with his face close to the noblemech's, trailing a servo over Ratchet's shoulderstruts, and even going so far as to briefly perch himself on Prime's lap before spinning back onto his peds, all the while not missing a note.
Spike's first warning was when he noticed that the singing had gained that extra dimension that meant that one was in close proximity to the singer. Then he was gently but abruptly set on his feet, and gaped in astonishment at Jazz, who was currently crooning out "So I got up and asked for his name" while 'dancing with' (really it was more like suggestive swaying in front of) Spike. The teen was mortified, blushing to the roots of his hair and turning in an attempt to escape via Prowl. To his surprise, the tactician blocked his escape route with an upraised servo and a distinctly amused smirk. Bumblebee gently made him turn back to face Jazz with a kind servo and a mischievous smile. Grinning as he sang now, Jazz gently took his hand in his servo and began dancing in such a way that Spike had to move with him.
Pretty much every Autobot in the room (and almost everyone was there, it was one of their infamous post-kicking- Megsy's-skidplate parties) was cracking up at this point or yelling out things like "Work it, Jazz!" or "Isn't he a little young for you?" All of which was just adding to the humiliating experience. Spike was, after all, a teenager. His ego was fragile.
He was relieved when the song changed to 'Unbreak My Heart' and Jazz turned his attention on the tactician, sweeping the white Praxian up and holding him tightly to him while he looked deeply into his optics (presumably, it was hard to tell with that visor) and mournfully crooned the lyrics while swaying gently.
Spike made good his escape, slipping down where Prowl's empty seat was and beating a hasty retreat for the door.
That was the LAST time he went to an Autobot party where ANY form of karaoke was occurring.