opb:
I am an absolute perv. The first thing I notice and am attracted to in a lady is her smile (if she can manage to break one out when seeing me).
If I'm facing her front this is definitely true for me, especially if the woman has a 'twinkling' in her eyes, i.e. their pupils are dilated, meaning that she's glad to see me.
If I'm experiencing a 'rear view,' I can't help focusing on a female's posterior, if it's at all attractive. To me, a womanly derriere has been designed by the Sacred Feminine to be smacked (mildly if she's 'vanilla' in terms of the spanking kink), along with playfully patted, pinched, squeezed and especially kissed (literally rather than figuratively) quite sweetly.
Since I'm a married man, there's only one beautiful bottom, a rather 'reubenesque' one , which I can do these things to in reality, as opposed to fantasy, and I certainly enjoy doing them.
In return, I expect my darling wife's occasional attention to my own behind to generally be much more strenuous, smartly stinging in fact... --C.K.