Pull one of them into the pool

You grab the closest girl by surprise and pull her into the pool. As she surfaces she lunges at you ready to fight. You are still out of breath from being underwater so she easily pushes you around the pool

Soon she pins against the edge of the pool and holds you there. "Girl, each second you hold me here is another second I get to catch my breath". She just laughs in response, "dumbass, you keep on forgetting there is two of us".

You look over to see the other girl wave and smile at you before pressing the button again. You look up to see the diving board come crashing down on your head. Stars ignite in your vision and the last thing you hear are girlish giggles as you pass out and fall underwater.

Sorry