Micky Malkovich (Noel Fisher) wears the same t-shirt that Zach Galifianakis wears at the bachelor party in The Hangover (2009).
When Debbie and Carl are talking in Carl's room, (about 31 mins) there is a basket on the ground from Buy More, a fictional store from the NBC show Chuck.
The title is obviously a reference to the famous criminal couple during the time of 1920s Bonnie and Clyde