Yeah, gak or floam once rubbed into fabrics or carpet were pretty much impossible to get out.

I think we had one container of each, and after my mother realized their staining potential, we found them both dried up one day, their lids mysteriously left off.

As someone that saw that era, I need statistical backup for that assertion.

I grew up in the Nickelodeon era. Pretty much every child star at the time, got slimed at some point. And Nickelodeon had their own amusement park with slime themed attractions. Every kid whose family had cable seemed to watch Nickelodeon. I came from a poor family without cable and I honestly thought that the Nick shows were a bit too corny and homegrown. So perhaps I noticed the culture more because I was a bit eyerolled by it. But it was a halcyon for sure..a staple of my generation.