Lady Macbeth tells the guests that this is just a strange habit Macbeth has.
"Think of this, good peers, But as a thing of custom. 'Tis no other; Only it spoils the pleasure of the time."
Lady Macbeth tells the guest that he has been sick since youth and he was having an outburst.
That he is sick :)
On Macbeth's chair.
In the Shakespearean play, Macbeth [c. 1014-August 15, 1057] held a banquet at Forres Palace after his coronation at Scone. But when it came time for everyone present to be seated, Macbeth wouldn't take his seat. The reason was the pre-empting of the seat by the ghost of Banquo. Banquo was heading back to the Palace for the banquet when he was accosted by three murderers. He made it no further than the nearby park, because his throat was slit. But his ghost made it to the banquet, on time and to unsettle Macbeth, who had hired the killers.
Lady Macbeth sends everyone home early because she is afraid of what Macbeth might say.
Oh, witches, a ghost, prophecies, that sort of thing.
Macbeth observes the ghost of Banquo at a dinner. He rages at the ghost while others just see him addressing an empty chair. This worries him and he goes to visit the witches who tell him to beware Macduff. Since Macduff is in exile, he assumed he was safe and put everyone in Macduff's castle, including his wife and children to death.
On Macbeth's chair.
One example of dramatic irony during Macbeth's banquet in Act 3 is when Macbeth sees Banquo's ghost seated at the table, but none of the other guests can see it. This creates tension as Macbeth's reaction to the ghost reveals his guilt, while the other characters remain unaware of the reason for his distress.
Lady Macbeth reacts to Macbeth's behavior with confusion and concern, as she cannot see the ghost and worries about Macbeth's state of mind. She tries to calm him down and dismisses the guests to prevent further embarrassment.
Pull up a chair.
Plays which don't have people in difficult situations are boring. Therefore all plays have characters in difficult situations. Like for example being at a dinner party your wife is throwing when you see the ghost of your best friend who you just had bumped off. I'd call that a difficult situation. How does Macbeth handle it? He loses it and starts babbling. Or for example throwing a dinner party and suddenly having your husband lose it and start talking to his chair and hinting at people he's murdered. Another difficult situation, I'd say. How does Lady M handle it? First by trying to laugh it off and saying that your hubby has always been slightly loony then throwing the guests out the door.
In the Shakespearean play, Macbeth [c. 1014-August 15, 1057] held a banquet at Forres Palace after his coronation at Scone. But when it came time for everyone present to be seated, Macbeth wouldn't take his seat. The reason was the pre-empting of the seat by the ghost of Banquo. Banquo was heading back to the Palace for the banquet when he was accosted by three murderers. He made it no further than the nearby park, because his throat was slit. But his ghost made it to the banquet, on time and to unsettle Macbeth, who had hired the killers.
This is not a question.
Parson chairs can be a very comfortable chair depending on the length of time you sit in the chair. For example, dinner would be ideal due to the upright position you are held in, however extended time in the chair can be uncomfortable.
A foam chair bed can be converted from a chair to a bed. A piece of furniture like this is very versatile and allows the owner to save space, while still having an extra bed for guests to sleep on.
When you temporarily leave the dinner table you should always ask to be excused. Also, never place your napkin back on the table, leave it in your chair.
Banquo is skeptical of the witches' prophecies and warns Macbeth to be cautious of their potential for deception. He also expresses his concerns about Macbeth's intentions and the possible means he may resort to in order to fulfill the prophecies.
Lady Macbeth sends everyone home early because she is afraid of what Macbeth might say.