Wayne Dobson's Exchange (better know as the sex trick)Once in a while an effect comes alone with a presentation so funny in its own right that all you have to do it perform it and you're guaranteed laughs.Wayne's Exchange (better known as the SEX trick) is one of those routines.  The simple presentation and method makes this a perfect & hilarious routine that can be performed close up, parlour & stage and it's even ideal for compares and MC's. Exchange is the ultimate packs small plays big ro...