You start looking for interracial porn, and it won't be long before you come across the term BBC, for "big black cock," the latter term also appearing fairly frequently in the dialogue of such scenes.
Just musing on a Saturday night.
The principal question is, Does the term come up in real life, whether its guys telling girls they're going to get it or girls telling guys they want it?
Which leads to a whole host of other questions that get increasingly silly:
Is there such a thing as an LBC?
Is the opposite of BBC an LWC? Does anyone ever say or hear "let me have some little white cock"?
Granted, neither LBC or LWC rolls as trippingly off the tongue as BBC, and that may be an impediment to its use.
Do the Asian guys get any credits or debits, e.g., BAC or LAC? Or Latinos: BLC or LLC?
Or maybe all the LCs can be lumped together as ETWs: eenie teenie weenies. For some of us, an acknowledgement of its existence might be an ego boost, lol.
We now return you to your regularly scheduled forum.