It's never happened, but it is something I've thought about when we were both sleep deprived and it was taking a while.

Lol no of course not

I haven't fallen asleep, but I can see where that might be possible. Sometimes, when he is doing it really slow, it is so relaxing to me.

You know, I think oral can be both invigorating or really relaxing. I once had a partner who went into a meditative state when I went down on him so he could really maximize his pleasure and focus on how good it felt. He never fell asleep, but he did get sleepy. I don't really think its a bad thing, depending on how you're doing it.

Like, if it's super rhythmic and slow, expect me to start nodding off. But, if you're surprising me and nibbling and sucking on my lady business, I'm going to be squirming too much to zonk out. It all depends on the person, though, I guess. But if I were putting my all into sucking my boyfriend off and he fell asleep? I'd flick him in the sack for good measure.

No.

However, I've fallen asleep while I was giving HIM oral.

That's what happens when you wake me up early in the morning when I have had less than 3 hours of sleep and ask for a blow job

I've fallen asleep during it, usually because we never seem to get around to it until it's REALLY late at night and we've both been up a long time, so I'm usually very tired by that point. Usually I'll wake up pretty quickly and apologize, but I still feel bad.

My husband almost has while going down on me...

I've fallen asleep during all sorts of sex; if I've had a lot to drink while out, as soon as I get between those sheets it's only a matter of time, regardless of who I've brought home with me.