Well, my loving wife had her broken foot in a cast which was itself in a heavy so-called 'boot' (like the bottom of an oversized gym slipper/shoe with lines of tread on its sole) and I was pushing her in a wheelchair along a wooden-planked walkway which went into the woods in a summer camp. (We were volunteer counselors but on a short break from our duties.)
I helped her out of the wheelchair, then she carefully seated herself and removed the rubber boot from her cast, after which I went prone over her lap and she took my shorts and briefs down to my knees.
Needless to say, Honey started whacking away and found the next several minutes highly amusing and entertaining as my bare behind became rather thoroughly acquainted with that thick, solid sole...

--C.K.