Kiss the Place to make it Well
A relic of a very common custom all over the world of sucking
poison from wounds. St. Martin of Tours, when he was at Paris, observed
at the city gates a leper full of sores; and, going up to him, he
kissed the sores, whereupon the lepef was instantly made whole (
Who ran to help me when I fell, And kissed the place to make it well?
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894