Lady Macbeth used the kings blood to smear all over the guards to make it look like the servants killed the king, even though her husband did.
Lady Macbeth placed blood on all the servants while they were sleeping (drunk) to make it look like they committed the crime.
Lady Macbeth is covering up for her husband, making it sound like this is a norm and that he’s just acting weird at the time.” She doesn’t want to b embarrassed any longer.
“Good friends, think of this nothing more than a strange habit. It’s nothing else. Too bad it’s spoiling our pleasure tonight.”
Lady Macbeth tells the guests that talk makes him (Macbeth) crazy & orders for them to exit: “Everybody, please leave right now. Don’t bother exiting in the order of your rank, but just leave right away.”