seeree – n. a classification of plot devices used in writing which the fiction (time travel/alternate dimensions) or things that do not actually exist within the fictional universe at hand (dreams/books) are used to lazily write-off any discontinuity or to retcon what you don’t like.

Ex.  I’m not sure X-Men: Days of Future Past would have been as enjoyable if not for the seeree that was used to excise X-Men 3.  None of that shit matters anymore!