This is specifically a question for the Deadpool 2016 movie.
In this question, Does Deadpool feel pain? It is pretty clear that Deadpool feels pain:
But, in the movie he seems to not feel pain very much at all. In the below scenes, it shows him being shot at, cutting his arm off, breaking both hands and his leg and getting pounded by Colossus:
He looks like he may be in a bit trouble when Colossus hits him, but he just seems to be winded.
There was the scene with him getting a knife to the head, but he looks more disorientated than in pain, as he is daydreaming of making love with Vanessa.
Was there any in or out of universe explanation on Deadpool's pain threshold?