Originally <a href='/showthread.php?p=21590952'>posted</a> on 04/07/2014:
Been a while since I saw it and I'm not exactly in a recollecting frame of mind right now, so my apologies if I misremembered anything. If you're referring to what I think you're referring to, Undertaker came up to him during an interview and said "Want to do it?", referring to a wrestling match, and then Brock walked away.
Bit of mistimed kayfabe, probably.