I love doing this sometimes, but I have to be really horny to do it, otherwise it just doesn't seem worth the effort. I usually shoot straight up or out depending on how im going at it, so a little contortion is sometimes necessary. My last GF would never let me blow a load in her face, but a couple of times, she'd jerk me off and it would end up right in my face. I teased her about it and made her feel guilty and she let me tittyfuck her, so it worked out pretty good for me.