You see, the thing is, at Kanji's age Jack already had a good deal of experience. He'd already started at the Time Academy and been exposed to John Hart, who had widened his horizons exponentially. And okay, like Kanji he'd grown up in a small town without much access to a lot of things - but it had been a small town in the 51st century, which had... somewhat different priorities in the realm of sex education.
"You don't need it," he shrugs, even though he's aware this is a very bad sales tactic. "Well, except lube, which is kind of an essential for gay sex. But the rest of it, it just adds to it, yeah? Adds a bit of spice to things. Or gets things going if you're going solo."