Used with the door wedge it can either be used to 'putt' the door wedge into the anus. Alternatively it can be used tomix shit (which you have placed) in the vagina and then can be used a dildo by the girl to not only push the shit further in, but to also pleasure herself.
Ben: So, what you do last night.
Louis: I putter and then door wedged my GF last night.
Ben: that sounds shitty for her...