Occurs in a game of conkers, where the conker of the striker splits and breaks upon impact against their opponents conker.

A conker (or buckeye) is the seed of the Horse Chestnut tree.
Juliette swung her conker, connecting perfectly with her opponents. The conker shattered and for a moment she thought she had won, the reality was she had been the victim of and Auto Nut Split and so lost the match.
by Colin Bucket December 19, 2019
Get the Auto Nut Split mug.