Identify tongue in cheek movie with exploding heart punch/technique
I've been trying to find a movie for years on and off. The problem is searching - the keywords return too many potential movies, so am hoping this will jog someone's memory, even though that is a long shot.
Era/Genre
I watched it between 10 or maybe 20 years ago - am 80% sure.
At the time it seemed like an older movie, like it was from the 70's or possibly early 80s - am only 60% sure, could have been any date given I watched it a long time ago.
I recall it was martial arts related (even if only loosely), and the protagonist was trained.
But it was not a serious martial arts movie, it was slightly tongue in cheek - I think intentionally, rather than how some people perceive old martial arts movies to be silly/funny.
The humour, if I remember correctly, is similar to "Kung Pow" (but it is not that) but a bit more toned down - i.e. not quite as silly, but this could possibly be there were less jokes.
Country of Origin/Language
I think it's an American movie, based on what I recall from the protagonist - 75% sure (ish).
It was also English spoken language - 98% sure (do not remember subs at all).
Main identifying part
The main thing I remember is the protagonist was wandering like a nomad across vast open lands, not desert.
He came across a small hut, about 6/8 feet wide (made of wood or could have been hide covered, not sure).
He then for some reason hit someone in the chest in a very particular way - like the Kill Bill "Five Point Palm Exploding Heart Technique" (but not that).
The reason for the attack, I think, was the other person was coming to kill him, I think a contract out on him, but not 100% sure.
The punch might not have been "5 point", I seem to recall he did something similar, then stood back.
The outcome for the person he hit was death - either heart stopped, exploded, or I think the chest exploded out in an over the top manner (was possibly intentionally silly/OTT).
I seem to recall there was a youngish boy stood close by watching all of this (about 10-12 years old, possibly lived in the hut), and the protagonist said something to him.
I think it was along the lines of something corny, and then he walked off nonchalantly as if he had said something amazing. 522