Olivia Wilde Takes the ALS Ice Bucket Challenge But Uses 'Breast Milk' (VIDEO)

We've long known about Olivia Wilde's amazing sense of humor and her appreciation for a good joke. As the latest celebrity to jump on the ALS Ice Bucket Challenge bandwagon, the actress did something exceptionally odd: instead of pouring ice-cold water over her head, she declared that she was going to use her own breast milk instead -- before proceeding to dump what looks like milk all over herself.

We're not sure if she's trying to make a statement about nursing, or just poking fun at her new Hot Nature Mama image, but this is definitely the strangest ALS challenge video to surface!

You may recall, Olivia recently posed in Glamour magazine with son Otis. We couldn't stop talking about one photo in particular, which showed her looking gorgeous while nursing in a cruddy-looking diner. Olivia, in a very Olivia way, didn't take it too seriously and instead spent the next few days after the picture was released joking about how Otis had urinated on her as he nursed sans diaper, and how, NO, she doesn't ordinarily breastfeed while wearing a $5,000 gown.

And now we get this: an ALS challenge video in which Olivia claims she couldn't find water and would have to improvise with a big bucket of her own breast milk -- and she says she spent all night pumping to accomplish this feat.

Check it out and let us know what you think: