When somethinginevitably sad is about to take place and a person prepares him or herself mentally and/or physically to better handle the pain. Typically, precrying takes place before rewatching a sad movie or episode in a season.
If it wasn't for the Department of precrime, I would have been murdered last year by my own brother! Thank god for the men in the precrime unit and those precogs!
Person A: We do a little trolling
Person B(Responding): We do quite a considerable amount of mental trickery and mockery of those who are unfortunate enough to fall victim to our clever little trap of social teasing
Person A: yeah, don't need to make this into another 1 hour lesson for me. Just doing a little trolling is enough to describe my precrumtious message.