Your grandma's down to bang Justin Bieber, Idris Elba, 2 Chainz and a ton of other famous dudes -- that's the takeaway from this hysterical vid.
Just watch ... a panel of grannies played "F**k, Marry, Kill" with a list of rappers, movie stars, politicians ... and even serial killers.
Highlights include: What Abraham Lincoln and Sir Mix-a-Lot have in common, doing damage to Bieber, and sorry, Ryan Gosling -- you gotta die. According to one granny, anyway.
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