I guess one should ask, what's the point of placing a frog or a pig on a crucifix in the first place? In Kippenberger's case it was a perchance for polemics...
Polemics
Po*lem"ics\, n. [Cf. F. pol['e]mique.] The art or practice of disputation or controversy, especially on religious subjects; that branch of theological science which pertains to the history or conduct of ecclesiastical controversy.
Just another artist "making his mark" on the world. Reminds me of Warhol and his "Campbells soup can"...
