Joe, 23, who found fame on the ITV2 show last year, didn't hold back with the truth and confessed that his fellow islanders would relieve themselves often if they had to.
Speaking exclusively to Daily Star Online at BOXPARK Croydon, Lucie Donlan's ex couldn't resist dishing the dirt, admitting that solitary sex acts did take place from time to time, with other cast members knowing too.
The former sandwich man told us: "I will neither confirm or deny it myself but if you need to, you need to."
Adding an element of humour, he quipped: "At the end of the day it's a very stressful environment and you have to somehow relieve yourself of some stress.
"I think everyone does it sneakily, they just don't tell anyone."
Each time the solo act had happened the guys in the villa would instantly be able to detect what had secretly gone down.
According to Joe, the lads appeared to have some kind of mutual understanding, without any words being muttered.
Dishing the dirt, he added: "We all just look at each other and know that they did."
The reality TV star is not alone when it comes to speaking out about the self-stimulating act.
In fact, funnyman Iain Stirling also hit the headlines recently for speaking out on the matter.
During an interview with Vice magazine, the famous voiceover explained: "I imagine they're asked to follow the normal masturbation rules, not in front of people and not in communal places?"
Masturbation is a touchy subject, with the onanism not being permitted and deemed as an official offence in eyes of the Love Island rule book.
TV restrictions for the show include; no smoking inside the house, pool or garden, no nudity, no masturbating and no unsafe sex.
Given Joe's recent claims, it would seem that behaviour guidelines are not as set in stone when it comes to masturbation.
Last year, allegations surfaced to suggest that Sherif Lane had been caught in the act, leaving chiefs of the show no choice but to ask him to exit the show.
Sherif's dramatic departure from the programme sent the rumour mill into overdrive with much speculation that the TV star had spent a little too much time in the shower.
The TV one minute wonder, did later come forward to admit he'd been asked to leave after accidentally kicking his co-star Molly-Mae Hague in the crutch.
Love Island airs nightly on ITV2 at 9pm