This man shared his very awkward encounter with his grandparents' sex tape on Reddit.
"Dad's Army" is a popular sitcom that made fun of the Home Guard during World War Two. These grandparents were apparently pretty hardcore fans since they decided to recreate the fictional from the show.
The Reddit poster stated that after his grandfather passed away, he had been going through his things and came across an old VHS tape marked as "Dad's Army (Homemade)".
He curiously put the tape in and started watching. Until his grandmother dressed as Mrs. Mavis Pike, proceeded to pull out his husband's "weapon" (If you know what we mean...) who was dressed as Sergeant Wilson.