[John Beresford Tipton]

"Trademark Laws are very specific when it comes to word marks."

Yes, but if he did not appropriate their slogan as his, but rather used their slogan as "satire" then I think he's okay.
Satire is protected.

[Atlas Sneezed]

"Yes, but if he did not appropriate their slogan as his, but rather used their slogan as "satire" then I think he's okay. Satire is protected."

Legally irrelevant. All that matters is whether the phrase is used on the same goods or services as by the original user of the phrase. Satire is no defense if used on the same goods, and a defense is not needed if the goods are different.