The porn video tag "suc-cac" seems to be a combination of two terms. Here's the explanation:
1. "Suc": This term is likely derived from the word "suk", which stands for blowjob in some languages, such as Czech or Slovak. In this context, it refers to oral sex performed on a man, specifically fellatio.
2. "Cac": It is difficult to determine the exact meaning of this term without more information, but it may be an abbreviation or misspelling of another word related to porn content. It could potentially refer to the act of anal sex (cac can be a misspelling or shortening of "cac" from "cago", which is Spanish for defecate, and in this context could be used as slang for anal).
Therefore, the tag "suc-cac" might refer to a video that contains both oral sex performed on a man and anal sex.