Suck 'em and suck 'em hard! This BoyToy LOVES to have his nut sack practically inhaled. There is no "too hard" with him, only hard, harder, and hardest! Seriously, I walked away from this play time with my cheeks aching from sucking so intensely. But the reward was having him cum for me. While he's not a big cummer, his intensity makes up for it, lol. Secretly, I think he's one of those guys that has used a vacuum or two. *wink*