The hubcaps comment was relevant because the theme of the event was a "sock hop."
Grove wasnt there. He didnt hear or observe the statement. He checked with the head of the association who was on the stage and she didnt know what he was talking about because no one was offended by his statement.
BTW, O'Reilly was MCing at this fund raiser for an organization that mentors at risk teens in the inner city, a charity that he supports. He discussed all of this on MSNBC show I saw last night hosted by host of Meet The Press.