dildo-trained
someone who has been fucked on a regular basis with dildoes in order for them to further accomodate various sized toys and cocks comfortably.
before releasing her to her new master's care, she was dildo-trained.
dildo train
A line of 50 women standing behind 50 men with 12-inch strapons penetrating their anuses.
Man I'd love to have a dildo train with them!