Meet the Feebles, I've seen some weird moves but this is by ar the WEIRDEST.
Directed by Peter Jackson pre LOTR, includes sexy/gross "muppets", date rape, drugs, and so much more bizarre stuff.
This is one of those movies that sticks with you, not only because it's gross, confusing, and disturbing, but you never stop asking yourself "how the fuck did this get made?!"