Hear that noise mom?

Can't resist posting this.
At bed time, Monika was jumping and laughing so hard...this is how the conversation went
Me: what is so funny Monika?
Monika: Listen mom (as she is jumping by me)
Me: sounds like watering gushing around
Monika: (Laughing hysterically)....Mom that is my belly
Me: How much water did you drink?
Monika: Just a couple of sips

Monika then laid down and was moving around in bed and you could hear it sloshing around..