I've always imagined it must be pretty labour intensive to a) find a bullfrog with a cold, and b) hang around long enough until it sneezes.
This is actually on the Bullfrog Snot website home page.
"Belligerent Berkshires? Malingering Mallets?
Derelict Diesels? Pathetic Pacifics?
You need BULLFROG SNOT! Liquid Plastic Traction Tires
Extracted from the suffering sinuses of mature Mojave Macho male frogs
in mating mode, under the full moon
as fast as our wrugged wranglers can wround ‘em up
off their free-wrange and herd ‘em in
… just kidding!!
All scales - All brands - No disassembly - No special tools
The performance improvement that you can install."