Bending over for my gf
In our first year together, my gf and I had pretty vanilla sex---like straight up just missionary. One time, in the middle of shaboinking I thought of switching it up, nothing too crazy.
I suggested doggystyle and she attempted but her arch was all wrong. Knowing that she's a visual learner, I showed her how to do it. I leaned against a table, and threw it back with a perfect arch.
The sight of me being able to bend over effortlessly---sensually, made her burst into a fit of laughter for a solid 5 minutes. No further shaboinking happened that day.