On Licking Golf Balls (To Green Tongue?)

I had a distant relation, Brian Mayo (he married my mother’s cousin), who used to lick golf balls, for good luck. But he was unknowingly licking fertilizer - strong stuff - used on golf greens. Luck, lick, muck, whenever I see the diagram of a dog-shit bag, on the lid of those green bins – and they are always green in Switzerland – I think of Mayo’s tongue, licking fertilizer of his balls.