Likely a phonetic misspelling or stylized version of Karma . In internet slang, "Karma" is often invoked schadenfreude-style—the cosmic justice that punishes hubris. When paired here, it suggests a moral reckoning. But there is a secondary layer: "Kama" as in Kama Sutra (pleasure/desire). So "Kama Oxi" could imply pleasure denied or erotic toxicity .
The term "OnlyTarts" likely refers to the specific content aggregator or social media channel that shared or hosted the video. The combination of a recognizable adult star like Kama Oxi in a dramatic, scripted "social experiment" creates a high level of engagement due to: onlytarts kama oxi homeless in a sports car