Hmm... I knew I forgot one scene....
Mike was almost drunk, almost. That is, he thinks he has only got two drinks yet. Well, it's a party or it's a party, right? Too bad that after a while he realizes people are going to the dance floor... with him still sitting their, being passive.
And Mike is not the kind of person to be passive. So he throws his golden shirt off and rises from his seat, quickly following Qadesh and Ahriman.
'Guys, guys!' His facial expression is like: can I still join? Then he shows a grin to Qadesh as he flexes his muscles, 'I dropped the Glee version by the way.'