WATCH: 'This Is The End' Trailer Doubles As 'Pineapple Express 2' April Fool's Gag

Finally, an April Fool's joke that actually sells something. This clips starts out like a half-assed so-bad-it's-good sequel to Pineapple Express with Seth Rogen, James Franco and Danny McBride and eventually reveals itself to be a clip within a clip to one of the most hotly anticipated movies of the summer:  The funny actor apocalypse movie, This Is The End.

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