If you thought bare feet on bulkheads was gross; you might up-chuck at this!
Its totally disgusting -
Image may be NSFW.
Clik here to view.
United Airlines passenger uses foot to change cabin dial on plane | News.com.au
Exception - OK I'm assuming here that the person had two perfectly well functioning arms.
Its totally disgusting -
Image may be NSFW.
Clik here to view.

United Airlines passenger uses foot to change cabin dial on plane | News.com.au
Exception - OK I'm assuming here that the person had two perfectly well functioning arms.