Whipping them back & forth.
Cowgirl: hips back and forth or hips up and down?
Back and forth
A little back and forth action
Back and forth
Sliding it back and forth
Floppin' Back and Forth
Back & Forth
Back and forth
Back And Forth
Switching back and forth between Carter Cruise and Dakota Skye
Back & Forth
Back and Forth
Back and forth
Back and forth
A bit of back and forth
back and forth:)
She Loves It When We Switch Back And Forth
Sliding my foreskin back and forth.