3 guys get stranded on an island with a tribe of cannabals. After struggle they are all caught. The leader says "I will grant each of you one wish and then we will kill you and turn your skin into boats."

The first guy says "I want a gun." The leader gives him a gun and he kills a couple of them and they catch him and turn his skin into a boat.

The second guy says "I want a grenade." The leader gives him a grenade and he throws it and kills a few of them and they catch him and turn his skin into a boat.

The third guy says"I want a knife." The leader gives him a knife and he repeatedly starts stabbing himself saying "screw your boats, screw your boats."