Mumbledy peg

Mum´ble`dy peg`

n.1.A game played with a pocketknife, the object of which is to throw the knife in any of a vairety of ways (such as over the back), or from various positions, and have it stick in the ground or another surface. Also called mumble-the-peg and mumble peg.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.