You should let your partner know what your expectations and limitations are to avoid unwanted surprises later on.
When you feel they are ready, slip your hands onto their inner thighs one of their and run your thumbs up towards their crotch.
Ass licking is a fantastic stand-alone activity that you can try with your partner…tonight! Stand behind them and crouch down or kneel on the floor so that your face is hovering behind their tush.
So why are so many people going dirty south on their partners? You reach up to support their thigh while they lower themselves on your face.