I would like to share funny thing we do in Czech during Easter.

Boys get willow branches, braid them together into whips and decorate them with ribbons to whip/spank girls ass for luck and fertility. The word for this whip in Czech is pomlázka.

A legend says that it keep women healthy, beautiful, and fertile during the whole next year.

https://english.radio.cz/czech-easter-tradition-whipping-girls-8164899