Shithouse phones have to be the grossest thing known to man. I'm not entirely sure why they exist in the first place. Who in their right mind wants to carry on a conversation while plopping away? You're not fooling anyone. The person on the other end of the line knows that you're dropping bombs and reading Las Vegas 24/7 while talking to them and that you are a filthy animal.
I couldn't imagine a situation where I'd even touch the receiver and put it near my face. Imagine all the filthy fecal particle hands that touched that phone before you and all the hotel maids who never bothered to clean it and then you're supposed to put it close to your mouth? Nope. Not unless I was waiting for a ransom call and was taking a quick shower break would I even consider putting that sewer phone near my face.