A homeowner found the two strangers inside a tent which had been put up in the garden for her children to play in during the sunny days of the lockdown.
After surprising the pair who were said to quickly leave the scene after being disturbed, the homeowner called the police.
Officers spoke to the pair and gave them a warning.
The homeowner has shared details about the incident on social media, but has said she does not yet find it funny. Her young child was with her at the time she discovered the pair in a state of undress, during an intimate act.
Pictured top: Guernsey Police station and (inset) file image of a tent.