For Fox, switching up the release was a no-brainer after seeing the successes. “The Boy,” $7.9 million ($3.5 million international). 7. “Dirty Grandpa,” $7.6 million ($5.5 million international). 8. “The 5th Wave,” $7 million ($13 million. Get Dirty Grandpa DVD and Blu-ray release date, trailer, movie poster and movie stats. This comedy brings a new meaning to the phrase generation gap, as it focuses in on the lives of two…