Originally posted by
As much as you may enjoy it and as much happiness as it might give your partner, is it ever "hard" to do, because your jaw or tongue get sore or tired? Be honest!
Yes. & my partner's does too, but he sure has determination! He usually can perform for up to 45 minutes without jaw discomfort. I hate for him to ever have to spend a long time doing that, but he's overly kind and generous. I'm very lucky there. Thankfully, it usually doesn't take me so long to orgasm that his jaw or tongue gets really tired.
For me, it's my jaws because holding your mouth open so wide for so long really works them out. Also, around my lips gets to aching if I've been doing it for a long time.