Rodger Ebert's take....
"The Change-Up" is one of the dirtiest-minded mainstream releases in history. It has a low opinion of men, a lower opinion of women, and the lowest opinion of the intelligence of its audience. It is obscene, foulmouthed, scatological, creepy and perverted. As a bonus, it has the shabbiest low-rent main titles I've seen this side of YouTube.
Rodger Ebert
That sums up this trainwreck superbly.
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http://theobamafile.com/index.htm