To preclude a person or organization from an opportunity (i.
e. - an event,
deal, or situation) with a negative context.
In other words, the
first party screws the second party out of a particular opportunity.
Upon arriving late to a dinner event, when dinner has already
taken place.: "Well, it looks
like I got jimmydicked out of dinner."
In a business context: "Why is Steve jimmydicking us on this
deal?"