In case you missed this: banana skins can be slippery under foot; this prize winning article explores why:
We measured the frictional coefficient under banana skin on floor material. Force transducer with six degrees
of freedom was set under a flat panel of linoleum. Both frictional force and vertical force were simultaneously
measured during a shoe sole was pushed and rubbed by a foot motion on the panel with banana skin.
Measured frictional coefficient was about 0.07. This was much lower than the value on common materials and
similar one on well lubricated surfaces. By the microscopic observation, it was estimated that polysaccharide
follicular gel played the dominant role in lubricating effect of banana skin after the crush and the change to
homogeneous sol.
https://www.jstage.jst.go.jp/article/trol/7/3/7_147/_article
