The worst example is sitting on our toilet (right by the front door) having a dump. Obviously you are not going to answer the door right in the middle of it.
So try quietly to call the missus to answer the door, but she doesn't hear you, so you have to shout louder (all the time the guy is no more than a few feet away from you, wondering what the F*** is going on).
So your missus finally hears you calling.
She screams "You answer it"
At which point you try to say quitley "I am having a crap dear"
She says "I can't hear you"
So you belt out "I am having a crap"
At that point she realises and answers the door.
"Oh sorry my husband was having a crap"

Well I ask you LOL :-)