By skyforbes Whenever something goes wrong, someone screws something up, etc. I often say "Okay, kill him!" which is from the scene towards the end of Dumb and Dumber when Lloyd finds out that Harry went on a date with Mary. I don't think anyone has ever clocked it as a quote from that movie.
I also use "You're doing it, Peter!" from Hook whenever someone starts making progress on something they were struggling on. That gets recognized every now and then but not always.