The song "Light Switch (Charlie Puth Cover/Parody) [3.7.22]" by Grill Z & Leilan The Savage appears to be a humorous and lighthearted take on a romantic or sexual encounter. Although it is a parody, we can still analyze the underlying message as follows:

The lyrics in the verse highlight a scenario where the speaker is being bothered or annoyed by someone who calls them at an inconvenient time (11:30 AM) and displays behavior that seems intentionally irritating. The line "But I can’t fart back when you poop like that" could be interpreted as a metaphor for not being able to retaliate or respond in a similar manner when faced with unpleasant actions from this person.

In the pre-chorus, the speaker describes feeling hypnotized or captivated by this person's presence, despite consistently denying any connection or attraction to them. The line "And every time that I look in your eyes you say I’m gay" adds a humorous twist and suggests that this person may jokingly or playfully accuse the speaker of being interested in them.

The chorus revolves around the idea of being turned on like a light switch by this person's movements and the impact they have on the speaker's desires. Despite initially not wanting to engage in this attraction, the speaker acknowledges the power this person holds in making them want them. It can be seen as a playful and exaggerated way to express their increasing interest and physical attraction.

Overall, the song "Light Switch (Charlie Puth Cover/Parody) [3.7.22]" explores themes of unexpected attraction, playful banter, and the influence someone can have over another.