First of all: Bill O'Rights you're story really rocks!! Being a person that always visualises thoughts, I could easliy imagin how it must have been.
Can't wait to try it out myself
Personally as most of us in here I'm aslo into the secretary-boss, younger boy - teacher, boy and friends mom thing.
What really turns me on in the secretary situation is the outfit: high black leather boots, black stockings, short skirt and a some kinky see through underwear.
But in the two other situations it ain't about the outfit, but rather the feeling that you hand over complete control to your girl. Acting that it is your first time, asking what you should do, asking if it's ok if you touch her in particular places.
Another thing that really get's me going is when my gf sits on top of me and, I swing my arms to the back and she grabs my hands and holds them at that place so I can't move them anymore (soft form of bondage). When she saw that I liked it that much, also my gf climaxed like amost immediately
Hmmm, still two hours to get home