Seth Rogen And Zac Efron Have Big Plans For 5/20

Seth Rogen, Zac Efron and the makers of the 2014 comedy "Neighbors" are trying to make May 20th the new 420 with the release of "Neighbors 2: Sorority Rising." After defending their neighborhood from the encroachment of a rowdy frat house, the Radners (Rogen and Rose Byrne) have to deal with the invasion of a sorority that is determined to put the old fraternity's antics to shame.

To promote the new movie, producers released a slew of new cannabis-themed trailers in celebration of 420. Check out the special promos followed by the full trailer below.

1. Math Versus Marijuana

In this first 420 feature, Zac Efron's frat boy Teddy reveals that he's a savant when it comes to crunching cannabis numbers. "I suck at math. I'm good at weed," Teddy says when pricing out the sorority's stash.

2. Rogen's Marijuana Marathon

We don't know why Seth Rogen is running for his life in this clip, but we have a hunch about what he's got in the garbage bag.

3. The Official Trailer

There's too much insanity to go on here to summarize. Just check it out for yourself.

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