If you hear people in an adjacent room having sex can you determine what hole they're using?

[purplepoppy]

We've all heard a couple in the next room having sex. It can be arousing or annoying depending on your perspective. But without them making any reference to a hole can you guess which one is being used just by the moaning.

[Anonymous]

If he is talking and she isn't, that's a blow job.
If she is moaning and telling him to go slow, it's probably anal.

[Anonymous]

I couldn't. All just the sound of flesh slapping flesh to me.