Exchanging and eating Easter eggs is a popular custom in many countries. In the UK before they were replaced by chocolate Easter eggs real eggs were used, in most cases, chicken eggs. The eggs were hard-boiled and dyed in various colors and patterns. The traditionally bright colours represented spring and light. Sadly, nowadays if you gave a child in Britain a hard-boiled egg on Easter Sunday, you would probably end up wearing it!
An older more traditional game is one in which real eggs are rolled against one another or down a hill. The owner of the egg that stayed uncracked the longest won. Even today in the north of England, for example as at Preston in Lancashire, they still carry out the custom of egg rolling. Hard boiled eggs are rolled down slopes to see whose egg goes furthest. In other places another game is played. You hold an egg in the palm of the hand and bang against your opponent's egg. The loser is the one whose egg breaks first.
Nowadays people give each other Easter eggs made of chocolate, usually hollow and filled with sweets. On TV you will see adverts for Cadbury's Creme Eggs, a very sweet confectionery. The catchphrase for the adverts is "How do you eat yours?" And Britain children hunt for (chocolate) Easter eggs hidden about the home or garden by the Easter bunny.
I hope you enjoy your chocolate eggs, now with some insights about it! ;)