From the New York Daily News:

There may be more trouble brewing for Sacha Baron Cohen. Comedian Pauly Shore is the latest person to threaten the "Bruno" star with legal action, claiming that an adopted-baby bit in the upcoming "Bruno" bears a striking resemblance to the trailer and tag line for his 2007 film, "Adopted." Shore tells us he has contacted his attorney and is waiting to take legal action against Baron Cohen...

FilmDrunk explains:

The tagline to which Shore seems to be referring is the "First there was Angelina, then there was Madonna, now there's Pauly!" bit from the Adopted poster. Which is a lot like Brüno's voiceover, "Angelina's got one, Madonna's got one, now Brüno's got one," at 1:30 of the Brüno trailer, which came out a couple months after the Adopted trailer.

http://videogum.com/archives/justice/pauly-shore-is-threatening-to_077272.html