Wiktionary
slippery jack
n. A mushroom in genus ''Suillus'', family Boletaceae, especially ''Suillus luteus''; boletes, they have no gills, but release spores from tubes ending in open pores.
Wikipedia
Slippery Jack
Slippery Jack is a name for:
- An Acoustic band from Lawrence, KS'
- A species of mushroom, Suillus luteus
- Any mushroom of the genus Suillus
- A character from the children's television show Toad Patrol and Winx Club (mentioned)