As noted earlier, The Undertaker was in attendance at UFC 121: Lesnar vs. Velasquez last night along with wife Michelle McCool. While 'Taker was acknowledged during the broadcast, McCool never was.

An interesting moment came after Lesnar was KO'd by challenger Cain Velasquez. Taker was being interviewed by's Ariel Helwani when Lesnar walked right by him. 'The Dead Man' asked Lesnar, "Do you want to do it?" Brock kept walking, not acknowledging his former rival.

When asked about the brief exchange, Undertaker admitted that it was personal but wouldn't go into specifics. You can watch the full exchange below. For more on the fallout from last night's UFC event as well as UFC President Dana White's response to the Undertaker - Lesnar confrontation, check out for all the latest UFC news by clicking here.

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