He has requested her to entertain few other men on occasions. I was again speechless but I tried to again console her ‘ what difference it will make...whether she has sex with one men or ten. She was angry, said she felt like a whore… I grabbed her by the shoulder and told her she was not a whore.. she was just paying the price for being beautiful women which any men would like to have. After consoling her a bit, I gathered all courage and told her that even I was interested in her sexually.. But I didn't dare touch it and give myself away by rustling clothing or bumping into something. I watched my Mom try to fit that massive trunk into her mouth but he was obviously meeting resistance only a few inches in. She gagged a lot, and even though she was obviously trying not to look my way, she did, and often. He lifted her up to her feet. Not a difficult thing to do, he must weigh 300lbs to her 110lbs. She fluidly molded into whatever spot or position he placed her in. He obviously was. I arched my back, squeezed every muscle in my body as a huge spurt of white hot cum erupted out landing on my sister’s forehead, over her left eye, across her cheek and trailing down to her left nipple. The second huge spurt landed right between her eyes, trailing down over her nose, right cheek and onto her right breast. My body shuddered as I continued to cover her with my hot seed.The third huge spurt of white hot cum hit the target, landing right on her sexy lips and inside her open mouth,. I think she was trying to do a blowjob like she'd seen in a porn video or something. There wasn't a lot of tongue action involved, though she did slip down and lap at my balls a little now and then. Mostly she just tried to suck me down her gullet and most of the time she managed it, at least for a moment or two. Then she'd pull off, gasping for breath, only to catch her breath and dive again. Occasionally she would gag and pull away coughing.To be totally honest, I've had better blowjobs, but.