The term "iyottube" appears to be a misspelling or typo, likely intended to be "iotube". Assuming that's the case, it seems to be derived from the words "Io" (an internet slang for an attractive woman) and "tube", which is a common slang term for pornographic videos. Therefore, "iotube" may refer to a video featuring an attractive woman in a sexual context or involving explicit content with her.