Viscous materials are probably one of the more common elements that come up on a regular basis, and one of the grossest to record. Let me save you the trouble. Slime is a collection of different Viscous materials ranging from literal slime to more abstract slime-like sounding materials like rubber.
One of the featured sounds of the library is a gallon of slime being tossed around, man-handled, and squished.
All the items in this collection were recorded at 192khz with a Sanken CO100k, so there's a lot of flexibility to be had pitching and manipulating the sounds.
Before you stick your hand in that jar of mayo, give the demo a listen. It might just save you some time, and smelling like a sandwich the rest of the day.