Jonah Hill's Raunchy Teaser for 'The Sitter'

20th Century Fox

The new teaser trailer for Jonah Hill's 'The Sitter' colorfully illustrates why babysitters should be vetted thoroughly.

The comedy opening December 9 stars the newly skinny funnyman as a college student with little direction and no work ethic, who gets thrust into the world of babysitting.

Watch the clip to see Jonah go from looking after the three innocent children next door to fending off drug dealers in a high-speed car chase!