There's so many things, let's see...
When my wife flashes truck drivers.
When I think of her and one of her sisters doing me.
The thought of coming on my wife's face and tits, then, actually doing it.
Fantasies of my wife getting gangbanged.
Short shorts, short skirt (with or without panties), thigh high stockings, tight shirt (with or without a bra), low cut shirt.
Eating my honey's pussy.
There's more, but that'll do for now.