The Bus Uncle meme has made it onto a song by a HK group called 軟硬天師 (Soft Hard). The song is called 拍膊頭 (Shoulder Pat), and the CD is called “Long Time No See.”
Yahoo HK’s page for the album.
Buy at YesAsia!
Thanks Josh for the tip!
P.S. Those are the two members of Soft Hard, and yes, their costumes are meant to be silly (and satirical of Ultraman and Masked Rider ones).
Update: The costumes were created for this McDonalds commercial, also featuring HK popstar Eason Chan.