When I asked my tutor to "control my ejaculation," her sadistic side was beyond my imagination! "Listen to what the teacher says... Don't cum without permission..." I can't cum even with a handjob, I can't cum even with a slurping blowjob, and I can't cum even in a tight vagina! After enduring the merciless hell of endurance, I cum all the way to my brain with a massive explosive ejaculation!