WW2 German stick hand grenade. Tucked into the belt or boot of infantryman was a formidable weapon both in assault and defence.
Unlike allied grenades it did not depend on throwing out fragments of red hot metal, just the power of its 4.2 oz explosive charge.
May have resembled a kitchen utensil of the time.
That potatoe masher exploded so close that I cannot hear what you are saying and Seargent Bodybitz is dead...