Red Cockroaches (2003)

http://us.imdb.com/title/tt0389313/
Adam meets a lovely girl on the subway only to discover later in the story that it's his sister that he thought had dies years ago.

This clip is somewhat extreme as he uses ketchup as lubricant, all simulated of course. She got a jiggly ass so sweet.

http://rapidshare.com/files/188973970/RED_COCKROACHES_2003.mpg
51 MB