Shower head??

I normally masturbate with a sex toy or vibrator but lately I’ve been intrigued by the thought of using the shower head but I don’t exactly understand how to do it. I know I must sound dumb but am I just suppose to let water spray into my vagina? Like I just don’t understand how to exactly do it but I’m intrigued by the idea and really wanna try it. Can anyone explain to me how to do it please? I’d really appreciate any helpful information or tips you can give me.