That last ask makes me think that if Secondo is super tall he could probs wrap his hands around a 5’ s/o’s hips real easy. Cover their chest with one hand. Pick them up like a misbehaving cat. That sorta thing
I would think so. He is a big fan of throwing his partner over his shoulder to carry them when he’s jealous, or fed up with their teasing/bratty behavior. Plenty-a-time he’s whispered under his breath about their small size/size difference as he does so. He also does the same as he watches his hands encase their waist or hips, or take ahold of their neck.
I also think he’d use the difference to lift them against a wall and roll his hips against them. Their efforts to get away would be useless, and they’re just another toy to hump and grind on. It’d be so alluring to feel his huge cock and aggressive hips pressing them harder into the wall.
But his trans/male lovers? He may use it gentler, making comments about how they’re catching up to him, or how one day they’ll have their hands around his neck or waist for some payback. Secondo wouldn’t ever admit he’s not opposed to submitting once in a lifetime…
His trans/female lovers would get the most of it, a common name being his “alluring little viper”… I think he would like snake-like names, the way Primo might call them his sweet rose. Secondo would be obsessed with the sight of his cock and cum filling their stomach and womb, and would press down right on the bulge. His hand can cover the whole area, of course, providing the utmost pleasure. He’d tease his little viper about how they could strike back, but they’re just so tiny and obedient that they won’t. One day, they’ll get him when he least expects it, though.