As marketing campaigns for films go, this one is spot on. Channing, dressed as a marketing executive, did some research on Magic Mike's target audience and he garnered some less than surprising results - they mostly watched it "in parts", fast forwarded to the stripping, didn't care about the plot line, and generally requested more full frontal nudity.
So, instead of treating them to a screening of the film, they got a load of male strippers up in their grill, before a wigged Tatum twerked voraciously in one woman's lap. Perhaps he gave it extra socks because she insisted on keeping her redundant 3D glasses on.
More of this kind of PR please.