Justin Bieber appears to be openly taunting Scott Disick with confirmation of his rumored hookups with Kourtney Kardashian.

The 21-year-old Bieber took to Instagram on Sunday to post a seductive pic of him and a woman who strikingly resembles the 36-year-old mother of three, captioning the photo "Lord knows."

A photo posted by Justin Bieber (@justinbieber) on Dec 13, 2015 at 5:13pm PST

While it's uncertain if the woman in question is actually Kardashian, Bieber's intent seems clear. US magazine adds the pic displays Bieber leaning up against a black Audi with the woman in a compromising position. The picture shows off Bieber's new neck tattoo, proving it had to have been recently taken.

Kardashian was also recently spotted leaving Bieber's Beverly Hills abode at 4 a.m. after a night of dining and hanging out with friends. In addition, word is he has taken to bragging to friends about his steamy hookups with the "Keeping Up With The Kardashians" reality TV star.

Back in October, the two were also spied dining together in LA, where observers claimed the pair "seemed flirty." She was also on hand for his American Music Awards after party last month.

After nine years and three kids together, Kardashian and the 32-year-old Disick split earlier this summer after he was spotted cavorting with ex-girlfriend Chloe Bartoli in Monaco over the July 4, holiday weekend.

Since then, Disick has also been romantically linked to teenage model Lindsay Vrckovnik. More recently, he spent 30 days in a Malibu rehab facility and is currently rumored to still be receiving outpatient treatment. Some media outlets have also reported he and Kardashian have been spending much more time together with their three children of late and appeared to be perhaps trying to work out their differences.

Meanwhile, Bieber is rumored to be single, though he was recently spied serenading on-again, off-again girlfriend Selena Gomez.