yes, but THIS works, and convenientlyl
The forearm sharpening in reverse shaving motion is equivalent to using a sharpening steel: it will remove a built-up bead of dead metal at the edge, but still not change the profile of the blade. Effective more often than not, but for how long?

Swiping in the opposite direction (same as shaving) will actually sharpen the blade itself (do not attempt on your own skin [duh], that's why you pay for new blades: you can't stand it).

To quote one A. Hitler in an old cartoon in The New Yorker magazine (sorry I couldn't find the link): "I think I may say, without fear of contradiction..."

that this little gizmo works, and easily:

www.sustainablevillage.com/servlet/display/product/detail/41865

I mean, really, who cares? But I'm still rockin' on the same Mach 3 blade from New Years' and it's Easter now. I don't even know how much money I've saved.
( Squilliam but . . . . *I'm* the one with all the talent!, Sat 3 Apr 2010, 21:08, 1 reply, 15 years ago)

now at
www.sustainablevillage.com/products/razor-saver

I just drag mine along my arm but as I use single blade safety razors it's cheap enough not to piss aroundresharpening then.
( SteamedCleaner, Wed 25 Aug 2010, 13:31, Reply)