I managed to do some things, I got a character from another known game to make a personal crossover for naughtiness of it all, BUT... the "big" dildo-guy goes all crazy once the character manages to get on top of it, xD
I toyed with weights or something like that, but it will still lift and goes all over the place breaking the action/thrust motion of the rider XD
I'll leave here some screen caps and if anyone wants the file, let me know.
[it's just a massive ridable model XD] (18MB):
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