A slang phrase for weed, because if unicorn meat DID exist then it would probably make you act like you were high. Commonly used around people who you want to hide the fact that your smoking weed from (parents, siblings, nosy friends, etc.)
Yo Deon we should eat some unicorn meat this friday!
(Yo Deon we should smoke some weed this friday!)
That unicorn meat had me so full I was giggling.
(That weed had me so high I was giggling.)