The comic teased in a video for his Ben Stiller Foundation that renaming the group after Aniston is bound to increase donations for Haitian children.
A confused Aniston is shown the 'See Jennifer Aniston Naked Foundation' during the PSA's climax and angrily tells off Stiller for his attempts to use her body to promote his charity.
Watch the 'See Jennifer Aniston Naked Foundation' PSA below:
Stiller's actual charitable foundation has raised thousands to help build a new school for children affected by the 2010 Haitian earthquake.
The Tower Heist actor and former US President Bill Clinton will host a benefit for the Ben Stiller Foundation at New York City's Skylight Soho in September.
Tower Heist, starring Stiller and Eddie Murphy, opens in the US and UK on November 4.
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Watch a trailer for Tower Heist below: