I desperately don't want to know what's in the goo. -Lilith
According to the Snack Keeper, the sex goo was discovered in space in their universe, in a lake on their planet's moon. Since discovering the goo, the Snack Dimension residents have learned to chemically synthesize it, and there are now flowing rivers of it on their planet[1] which run through their cities.[2] The Snack Keeper referred to one of these rivers as "the sex goo river." The goo doesn't exist on Earth, and it tends to disintegrate when it's brought to Earth's dimension.[3]
The Snack Keeper sometimes wears special latex gloves filled with the warm goo to make fisting with their bone hands more comfortable for sexual partners.[3] The Snack Keeper also said that the goo helps during the Snack Dimension's yearly orgy, which residents of the dimension participate in every December 25th, on the anniversary of when they landed on the moon where the goo was discovered.[4]
During Episode #17 of Diet Coke & Lilith's House of Snax, Lilith proposed opening an Etsy store in order to sell the sex goo (and podcast merch) to listeners. Upon being told that the goo tends to disintegrate on Earth, she responded, "Oh, we'll figure it out," implying that there are still plans to start selling the goo.
During Episode #26, Lilith asked the Snack Keeper if the sex goo is a chup or if it could be made into a chup. They responded, "I think I have to defer to the Chupqueen on this one. That seems like more her territory. I mean, we do consume some of it during certain acts. It tastes fine. I think it's maybe not a chup because it's not mixed; it's naturally-occurring."
The sex goo is also used in "bullman shows," a form of entertainment which involves a bullman and an octoperson having sex in front of people.[5] The Snack-Dimension has a tourism industry that relies on the sex goo, and the goo is therefore not allowed to leave the borders of the dimension. If people on Earth began making their own synthetic sex goo, then tourists would go there instead, as Earth's conditions are significantly better than the Snack-Dimension's.[6]
During Episode #125, Snack-Keeper III used the goo with Sky in the basement, and they allowed her to take some of it home but refused to let Diet Coke or Lilith have any.[7]