Continuity mistake: When Deadpool lies back on the barrels of kerosene, the opening for the drum under his head is shown covered by his back, while the drum under his right arm has its opening near his elbow. In the next shot, the drums have mysteriously turned, with an opening now appearing next to his head, and the one that had been under his elbow, now rotated by 180° near his shoulder. He then flicks a lit cigarette into the air, which is shown to drop into the drum next to his shoulder - except that the drum under his head is the one that explodes first. (00:01:55 - 02:09:00)
Leflyman
14th Aug 2018