Bruce, you need to learn the "Papal Picker" blessing-cum-greeting, a portfolio gesture epecilaly designed for this situation. As they approach with hand out to shake, you extend your right hand with thumb and fingerpicks still on it, and play a light, affectionate but firm tatoo in 3/4 on the crown of his orher head, while smiling beatifically and blessing them in whatever terms seem most appropriate.

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