You can buy an Ice Bucket Challenge Halloween costume, because that's totally gonna still be a thing two months from now.
"I am familiar with this cultural reference and therefore find it humorous!"
If there's one thing everybody knows about pop culture, it's that Internet trends last forever. It's why that "Chocolate Rain" song is still so damn popular, and it's why the New York Times decided to start reporting all of its news in rage comic form.
It's also why you'd be a fool—a damn fool!—to not jump on this fantastic opportunity to buy an Ice Bucket Challenge costume for Halloween. Not to mention all the many Halloweens to come. You'll be getting a lot of use out of this purchase. I guarantee it.
Just think about what you're getting for your $39.99. You're getting a plastic bucket. That's gotta be worth $27 dollars right there. And then there's the body-length mesh fabric cascade. I defy you to go to the hobby shop and come back with that much mesh fabric for less than $34 dollars. And that's not even considering the fake ice cubes. Can we even put a price on those fake ice cubes? I can't. And ten of the dollars you're spending is going toward whatever charity this Ice Bucket thing is supporting.
Look, just take my advice and go buy this costume now! Just think about how popular this Internet trend will be by the time Halloween rolls around! If we've got movie stars and former presidents participating in it now, just think how huge this will be in two months! We'll probably have Bigfoots and space aliens dumping water on their heads.