My mother gave me the odd slap as a kid, all thoroughly deserved ... the old man never... his disappointment (he never said much but it was obvious from his look) was always enough to make me reign my neck in.. Got 3 girls myself so always refrained from physical punishment, predominantly down to fear of hurting them physically as much as detesting the thought of it ... which I do. Their mum's administered the odd slap around the back of the legs but always at a point where every other attempt to curb the behaviour had failed ... one I particularly recall was when one was continually trying to run off in a crowded shopping mall ... the fear factor of losing her (and the Bulger tragedy) kicked in ... I have no problem with that. The short sharp shock led to some tears (on both parts) and some "sorry mummy's" and then a child holding our hands and full of smiles in next to no time. So for me, always an absolute last resort, but wouldn't necessarily castigate a parent for it.