For those interested, he is refering to the CB-1 and CB-2 receptor sites, which selectively bind with various cannabinoids. While technically more than one molecule binds with these receptors, all such compounds are cannabinoids which are found exclusively in cannabis and the human body (endocannabinoids).
Originally Posted by brewbuck: Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.