From The Marías YouTube channel:

bop it up! was written by María and Josh in the summer of 2020. ‘bop it up!’ is a feeling. it’s a feeling of “fuck it.” while we were recording, it just came out of me as I was going through the process of questioning my decisions, my life, my world. “bop it up!” is me trying not to care and to just overcome my insecurities. the red clones in the animation represent my deepest insecurities, the voices in my head. the water represents my emotional insecurities. the snakes represent my reactive insecurities. they all morph together sometimes, transforming into the other before my very eyes.