Father and sun and the holy pricks

The belief that such a symbol brings good luck and drives away evil spirits is so much ingrained in the psyche of the common populace in Bhutan that the symbols are routinely painted outside walls of the new houses and even painted on number plates of trucks. The carved wooden phalluses are hung (sometimes crossed by a design of sword or dagger) outside, on the eves of the new homes, at the four corners.

The wooden phalluses are also driven in the agricultural fields as a kind of scarecrow, when the crops start sprouting. The Atsaras (masked clowns) also decorate their headgear with phallus painted cloth, during the popular Tsechu festival held every year in different monasteries throughout Bhutan. These clowns also dance with their holy whips and wooden phalluses. On a road drive from Paro airport to Thimpu these explicit paintings of phalluses are a common sight on “white-washed walls of homes, shops and eateries.”

en.wikipedia.org/wiki/Phallus_paintings_in_Bhutan