Penknives are for making pens

Flick-knives are for people that bite their nails

Stanley knives are for killing people called Stanley

Penknives are very useful for sharpening pencils

Flick knives are very useful for killing people

Stanley knives are very useful for cutting polystyrene

Penknives are very useful for little boys to make catapults

Flick knives are for criminals without finger nails

Stanley knives are good for carving beach hut names

All knives are good for people that make first aid kits