The celebrity duo, both 44, took to social media to celebrate four million followers on Instagram.
But while they dabbled in some golfing activities during the unexpected bank holiday heatwave, not all went to plan.
The side-splitting video starts off with Ant preparing to shoot the golf ball off the tee as he dons a navy pair of golfing pants and a bright pink T-shirt.
Meanwhile, his BFF Dec is checking out their joint social media account at the other side of the garden.
After discovering that the pair have finally hit a whopping four million followers, an excited and rather bewildered Dec shouts across to Ant to share the good news.
"Oh wow! Have you seen how many million followers we've got on Instagram now?" he proclaims.
Unbeknownst to the fact that Ant has pelted the gold ball his way, Declan proceeds to inform his pal about their huge following.
In an attempt to warn his friend to move out of the way before getting struck by the sports ball, Ant screams "FOUR" across the garden.
However, ditzy Dec thinks that his partner in crime is merely guessing their amount of Instagram followers.
As expected, it all ends in agony as Dec is inevitably struck in the head by the rapid golf ball.
The genius skit was well received by fans who were left in absolute stitches after watching Dec fall to the ground.
They rushed to the comment section to share their love for the dynamic duo.
"Hope you're OK, Dec. Congratulations!!! Very well deserved! Thanks for keeping us smiling!" voiced one delighted fan.
While a second added: "You deserve 20 million followers. This looks agonising. Fair play Dec!".
"Ouch! That looks so painful. Hope you're alright Dec haha!" a third quipped.
While a fourth echoed: "Love you both so much. You always have me in hysterics!".
The hilarious video comes after Ant and Dec announced that they are selling a National Television Award each to support NHS staff.
The famous TV presenters are joining forces with Chris Evans and auctioning two shiny awards, which means fans can get their hands on them.
Ant and Dec will put the funds towards vital medical scrubs for staff working on the frontline amid the coronavirus pandemic.