So I am the drug dealer (DD) and my son is my distributor, the little boy (LB) that goes round his bike.

DD : Mate listen carefully , 
       this is the bag 
        you need to deliver.
LB : What is in it?
DD: Really---- you need to know that ? 
        Come off it,
         you only deliver.
LB: How much money?
DD: Look atch you , little monster . 
        I have the gun, 
        you follow instructions 
       and come back 
        then we talk money.
LB: Instructions then.
DD: Wear your hoody, 
      cover your head,
       go straight down this road five blocks 
      down-count ok.  
       Black mercedes with 
       a man standing outside it
        in a black suit .
       When you get near him ,
        you slow down -
       he will say Catch it, Catch it. 
      You do not look, 
       you say Catch it, Catch it.
       He puts his hand out- 
       give the bag and 
       turn round the corner 
       to come back here
        from the next lane.
LB: Easy.
DD: Right then- here you go.

A car journey made so interesting by letting imagination go riot. Completely spontaneous.We both enacted the scene, dad was driving. We so laughed after doing this intense drama with full concentration and full of local tones. Its hard to engage teenagers these days . But this type of roll playing is great fun and superb to pass time. All happy and good family interaction.