In a harsh lesson about playing pranks on your loved ones, Nova’s Ryan “Fitzy” Fitzgerald has seen a stunt on his wife leave her less than impressed.

Dubbed the “ultimate trust exercise”, Fitzy wanted to see if wife Bee Jay could lie for him by sending to fake detectives to their home and interrogating her about the brekkie radio host’s whereabouts one night in February.

Fitzy was filmed ringing his wife in a panic, warning her about the two detectives and asking Bee Jay to tell them he was at home in Sydney with her on the night he was actually at the Adelaide Fringe Festival.

However, Bee Jay failed the test and was left visibly upset when Fitzy finally appeared in person to reveal it was all just a silly prank.

Would your spouse lie to cops for you??? Fitzy put his wife to the test in the ultimate TRUST exercise! ???pic.twitter.com/gKUU4A26yg

— Fitzy & Wippa (@fitzyandwippa) March 14, 2018