Put a penny on it

From Huckleberries Tuesday:

Snopes says this old-fashioned remedy is “probably false,” but Coeur d’Alene Councilwoman Kiki Miller begs to differ. When she suffered “a nasty bee sting” recently, Kiki put a penny on it. Fifteen seconds later, Kiki Facebooks, and the pain level had gone way down. The copper of the penny is rumored to react with the sting. But pennies are now 97.5 percent zinc slug, according to Snopes.

Question: How do you deal with wasp/bee stings?