The prohibition of wearing linsey-woolsey occurs in two places in the Torah: "Ye shall keep my statutes. Thou shalt not let thy cattle gender with a diverse kind: thou shalt not sow thy field with mingled seed: neither shall a garment mingled of linen and woollen come upon thee." Leviticus xix.1; and "Thou shalt not wear a garment of divers sorts, as of woollen and linen together." (Deuteronomy xxii.11) As you can see cross-breading is forbidden, but monoculture is encouraged. Cheeseburgers are also right out: "Thou shalt not seethe a kid in his mother's milk." Deuteronomy xiv.21.

Ceci n'est pas un seing.