In the case of Ned"s first arrest for selling marijuana in the first few scenes, since the policeman brought up the subject of buying, this would have been considered entrapment and therefore could not be used in court.
It is not entrapment if the suspect knows he is dealing with an officer of the law. The police officer was wearing his uniform, which is more than sufficient notice to the criminal. There was no entrapment.
When at the ice cream shop he asks for a sample of Acai Berry but Paul Rudd says something different.
She says "crowning glory" but the subtitle says "crowing glory".