an anon made some concepts for cum mizzles in the whiteboard and it gave me an idea
What if the light world form of them are packaged condoms. And despite appearing like cum, the mizzles in the dark world are actually made up of the lubricant commonly found slathered inside of condoms. This could allow them to appear in more dark worlds, as sealed condoms are more common to find in the wild than splats of random cum
And here's where it all comes full circle. Spare condoms in Asriels dresser. Meaning, cum mizzles in TV world
If we wanted to expand on it further, maybe the condoms are a 'gift' from Toriel that Asriel never ended using. So the personality of the mizzles in the TV world could be similar to nuns who encourage safe-sex. And when a darkner needs sexual relief they 'sacrifice themselves' by performing sexual acts on darkners. They love doing this but would never admit to it. The dedicated nun themes also tie into the original mizzles royalty themes