It’s a subtle allegory for man refining his wisdom. The bananas represent immaturity clouding this man’s vision, an uncultured ape who only thinks about something as simple as delicious yellow fruit. With each banana annihilated, he shocks himself across one more step towards unclouded vision into the true nature of reality.
Or it’s someone blowing up bananas stuck to his face. I dunno.
An extra treat for you if you can make it to 1:45. LOLZ TO THE MAX!!!!!!!