Wrists bound to her thighs so she can't resist, tongue restrained so she can't cheat and block her throat from his dick, and suction cups on her nipples to motivate her (Marie McCray)
Fun facts by Eve: An entire chapter in the Kama Sutra is dedicated to “oral Congress” which essentially means fellatio. (Now, please enjoy my sexy voluptuous ass and what you’d like to do with it and my body)