Strewth, it was a heated argument between two people, someone, who just happened to be a female asked them to calm down, she was told to butt out.
He was swishing a glass about, before and during the argument, he wasn’t using it as a weapon.
The fact that B.B. hadn’t asked for the glass to be taken out of the pool at any point makes me think it was probably plastic.
So much talk of him being violent etc, he is known for his rants in the dr, now he does it in front of the housemates he is made out to be a thug.
Get a ruddy grip folks.