The 1st is a typical example of flipping the destination, copying back to source 2 then appropriate portion merging back to the destination. Can you see the join ?
The 2nd is a combination of merging with infinite contrast with different levels after copying back to both sources. Finally the RGB brightness controls were adjusted.
The right picture is generated as follows:
Further examples like the first picture
A humanoid is formed from brocolli and a fork and weird animal which has been contorted and blushed.
The apple is also mangled and tinted to look like wood. The face is portion-merged into abstract graphics generated only by CONTORT.
Again these pictures are mangled with various combinations of nudge, twist and implosion/explosion.