Just google for ‘Easter customs’ and follow the wiki links.
In some Central European countries (Poland, Czech Republic, Slovakia, Hungary) there is a tradition of sprinkling girls and women with water and spanking them with “Easter switches”.  The switches are made of willow rods decorated with color ribbons. The Polish tradition is called “Śmigus-Dyngus”, and is a tradition, that goes back to the Middle Ages. In the Czech Republic, such a switch is called pomlázka meaning “rejuvenator”, implying that a female struck by a pomlázka will become younger and prettier.
In Hungary, Transylvania, Southern Slovakia, Kárpátalja, Northern Serbia – Vojvodina and other territories with Hungarian-speaking communities, the day following Easter is called Locsoló Hétfő, “Watering Monday”. Men usually visit families with girls and women. Water, perfume or perfumed water is sprinkled on the women and girls of the house by the visiting men, who are given in exchange an Easter egg.
In the Czech Republic and Slovakia, a tradition of spanking or whipping is carried out on Easter Monday. In the morning, men spank women with a special handmade whip called a pomlázka (in Czech) or korbáč (in Slovak), in eastern regions of former Czechoslovakia Moravia and Slovakia they also throw cold water on them. The pomlázka/korbáč consists of eight, twelve or even twenty-four withies (willow rods), is usually from half a meter to two meters long and decorated with coloured ribbons at the end. The spanking may be painful, but it’s not intended to cause suffering. A legend says that women should be spanked with a whip in order to keep their health, beauty and fertility during the whole next year.
An additional purpose can be for men to exhibit their attraction to women; unvisited women can even feel offended. Traditionally, the spanked woman gives a coloured egg (kraslice) prepared by themselves, invites to eat and drink as a sign of her thanks to the man. If the visitor is a small boy, he is usually provided with sweets, and a small amount of money.
In some regions, the women can get revenge in the afternoon or the following day when they can pour a bucket of cold water on any man. The habit slightly varies across Slovakia and the Czech Republic. A similar tradition existed in Poland (where it is called Dyngus Day), but it is now little more than an all-day water fight.
But there’s a little verse, or two, for the man to speak before spraying around.
Going into the green forest
I see a naked woman
I get my dick
Quickly to sprinkle her.
Up the skirt,
down the panties,
let me sprinkle your bunny.
I’m not a bunny,
I need a kiss,
unbutton your blouse,
let me spray those bosoms!