Did the drink burn him? Did it put his eye out? Did it cause him to bleed, or did he just get a little wet.
So, if your neighbors hose just happens to get you a bit wet, will you sue? If this was a cup of scalding hot coffee I could see the point, but it was a cold drink for petes sake.
He was rude, he got wet.
She was rude and she poured the drink on him. That's why he got wet.