I came, I saw, I conkered (conquered!)
Conkers is a game traditionally played by children in Britain, the Republic of Ireland and some former British colonies using the seeds of horse-chestnut trees – the name conker is also applied to the seed and to the tree itself. The game is played by two players, each with a conker threaded onto a piece of string: they take turns to strike each other's conker until one breaks.
The name comes from the dialect word conker, meaning hard (related to French conque meaning a conch), as the game was originally played using snail shells. The name may also be influenced by the verb conquer, as the game was also called conquerors. Conkers are also known regionally as obblyonkers, cheggies or cheesers. (from Wikipedia)