I just bought this and I'm so excited!!

I've never owned one of these and it comes tomorrow! The reviews are great on it and I'm so ready!! For people who own this or similar what's your favorite way to use it? Shower, chair, wall, etc??? Give me some tips!

Edit:

Omg this thing is amazing! Its crazy how similar it feels to the real thing. I tried it in the shower last night, which is something I cant really do with my SO due to our height difference lol. This is gonna come in handy when my SO is gone on his work trips!