Green’s Dictionary of Slang

shreddie n.

[the breakfast cereal Shreddies, made of spaced strands of wheat]

(UK juv.) one who has badly thinning hair but still combs it in attempt to disguise this situation.

OnLine Dict. of Playground Sl. 🌐 Shreddie n. hairstyle used by (and insult used for) men whose hair is thinning, in a vain attempt to make it look as if it has some ‘body’. In shape and form it has the unfortunate result of looking like they have a Shredded Wheat on their heads thus rendering them a laughing stock to all and sundry – except that of course to themselves [sic].