The 3 bats

There are three vampire bats in a cave opposite 3 castles.
Bat 1: I'm gunna drink loads of blood tonight.
He flys off and after a while comes back with blood dripping from his mouth.
Bat 2: Woah what happened?
Bat 1: You see that castle over there?i completely drained to girls!
Bat2: Right, My turn
And he flies off and returns a while later covered in blood.
Bat 1&3: What happened?
Bat 2: you see that castle on the left? I drained two girls AND the owner!
Bat3: Woah i'm gunna get some blood.
And he flies off. He comes back drenched in blood.
Bat 2: Woah what happened?
Bat 3: You see that castle on the left?
Bat 1: Yeah....
Bat 3: I didn't!