Marc's "just a joke" mantra is no justification for his repulsive, derogatory, oft' Neanderthal, crude, insults. The 'just joking' barb is a cowardly response - it's not a carte blanche to continue such noxious behaviour. He seems nimble-minded, even funny at times, yet he craftily engineers his egregious verbal abuse and upon being admonished for it, hides behind the feeble "just joking" mitigation. Playful, skilled, quick-witted banter (obvious or subtle) or vulgar, unintelligent defamation that violates another? Marc knows what he's doing but has no filter...he's gunning for the shock-factor = camera-time.