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Honey, that is called a bag pipe fuck. Next time he does that squeeze his cock with your upper arm while moving your arm in conjunction with him. He'll love it!!
If his dick is long enough you should be able to suck it while you squeeze and move your arm and breast against it. He may want to remain motionless, depending on how much of him you can get in your mouth.
Slow day, uh?? Well that didn't ramp up this forum much.
More importantly, that tale belongs in the kinky category. Next time, show the fool where your vagina is. Word has it that you'll both enjoy his ejaculation much more there honey. Perhaps he developed early stage dementia. GOOD LUCK!!