From Dougie Maclean's "Caledonia" - last verse -
When the hands are shaken and the kisses flow, then I will disappear".
This is becoming supplanted by the increased informality of the last 2 decades with bearhugs, manhugs, womenhugs and kissing on both cheeks twice or thrice becoming commonplace.
Enough to make your hands tremble, Mrzzy?