Over my managers desk at my old job.
Kings Park in Perth, Western Australia.
Laying in my swag in amoungst all my mates at a camping ground in Narrogin, Western Australia.
On a beach one night.
In every room of the house i shared. (Bathroom, Lounge room, The housemates bedrooms, The spare room... Occasionally my room
)
In her parents lounge room.
In her parents shower.
and of course in the car plenty of times in different locations around WA.
I also fingered my ex to orgasm whilst one of my mates sat on the end of the bed with his back to us. He was absorbed in his game, and she was not too happy that i'd done it with him in the room...
Afterwards of course, she loved it at the time.