When Phedre Nicol was battling cancer in 2013 at the age of 69, she gave her husband, Nigel, strict instructions should she pass away.
Those instructions? Keep watering the plants in their home.
And when Phedre lost her battle in the same year, Nigel started keeping that promise.
He's been watering the ferns in their bathroom for years.
Fast forward to 2018 and Nigel is moving into a retirement home.
The ferns were still in such good shape, that he decided to pack them along with his belongings.
Only then did he realize that how wife has been playing a prank on him this entire time!
Nigel's daughter Antonia explained the prank on Twitter...
Yes, Phedre has had Nigel watering plastic for a few years.
Antonia explained to The Mirror that no one else was in on the prank...
"When she was in hospital, she told my dad that he was under strict instructions to water the plants in the bathroom. There was a purpose built container for real plants with a drain, but my mum must have replaced them with plastic ones. None of us knew."
Antonia explains that her father was so "overcome with grief," he religiously watered the plants.
The couple had apparently always been pranksters...
"My mum died a while ago, so this is a lovely memory of her for my my dad."
And the reaction it got from social media was even more heartwarming.
Nigel even reenacted the watering of the ferns for his new fans...