[P.O.E.]

The Left Handed Shake: Those that give a left-handed hand­shake are seen as at the very least a lit­tle strange and at the most as down-right insult­ing. To some peo­ple it’s as bad as spit­ting in their face. Want to know why? In some cul­tures, you wipe your back­side with your left hand. In many west­ern cul­tures this is seen as a sign of com­plete dis­re­spect to the other per­son so why would you do it in the first place.

http://gilpizano.com/personal-development/diversity/lot-persons-handshake/

FWIW

(Exceptions, of course, such as for the disabled (R. Dole) and Boy Scouts. Neither of which apply.)

[RummyChick]

I don’t think it was lefthanded. It appears it was some kind of reverse photo.