Ive always had a problem receiving oral and never been able to work out why. However lately ive found that when i masturbate unless i have something in me (vibrator, dildo etc) then i have a problem achieving orgasm. It doesnt have to be moving but i think that giving my vaginal muscles something to clamp down on make it feel more comfortable and natural. Also this would explain my inability (trouble) of reaching orgasm through oral and not being full at that time. Does this sound feasible and anybody else have or know of a similar problem?