Joe Jonas and Sophie Turner might have kept things low-key as one of 'those' couples but trust them to have a bit of good-humored fun at the expense of the desparate paparazzi dying to snap them in their most romantic moments. This Labor Day, the 'Game of Thrones' actress and her musician fiance decided to chill at the US Open with Joe's brother Kevin Jonas and his wife Danielle. But chilling wasn't the only thing that went on as the two decided to bless their fans with some intense tongue-action. And we're not exaggerating when we say tongue, they literally licked each other's mouth at the game.

In simpler terms, during Roger Federer's match at the US Open on Monday, the pair engaged in a fake make-out session just for the cameras and it was every bit as hilarious as they had intended it to be. Sophie was the one who initiated it, leaning in for the fake kiss. And Joe, having caught on her intentions real quick, began pretending to kiss his fiancee wildly enough to create a comedic scene. The two of them just attacked each other's mouths with their tongues out. 

This isn't the only time the couple has had some hearty laughs at the expense of the herd of photographers trying to snap their coupley-moments. In fact, this is the second time they have faked something in this very US Open. Back on Friday, as the couple watched Serena Williams play, they seemed super in love as they cheered the tennis goddess at her highly anticipated match. 

Following that, the two decided to mess around a little with the photographers, with Sophie tucking a seat cushion under her plunging plaid blazer and cradling her stomach, feigning a pregnancy. 

This comes shortly after another incident earlier this month when tabloids had snapped Sophie crying and looking distressed out in public with her fiance Joe. Mocking the news story, Sophie had tweeted about how grateful she is for a loving fiance who takes care of her during her periods.

Taking things to new heights at the tennis games seems to be a family thing for the Jonas brothers. During Monday's game, Kevin Jonas himself was photographed grabbing his wife's butt as the two walked along the bleachers. Maybe tricking the media runs in the family; or maybe it's just the tennis season that's got the Jonas brothers feeling extra cheeky!