Exploding Helicopter Quotient
Back in the old days, before the show was running on BBC Radio 5 Live, Mark and Simon were together on BBC Radio 1.
Around the time that the original Mission Impossible movie came out ( May 1996 if IMDB -  - serves me correctly, Dr Kermode coined a new phrase to express his (lack of) appreciation for films of this genre.
The phrase "Exploding Helicopter Quotient" was brought into the common lexicon of pre-Wittertainment as a way of indicating where, on the extreme silliness scale, a movie was, without resorting to the tired old tabloid mechanism of assigning stars.
And this was before Transformers, Avengers, The Expendables, Taken etc.