The former child star was caught cursing and screaming at photographers after leaving The Haunt nightclub in Brighton, U.K., where he sang with pal Adam Green, who was putting on a concert at the popular hot spot.
According to a source on the scene, Culkin was less than pleased with paps after the performance and proceeded to launch himself at a paparazzo upon exiting the club around 1 a.m. while attacking the shutterbug and telling him to go to hell.
And no, he was not heard saying, "You guys give up? Or ya thirsty for more?"
Home Alone jokes aside, there's no word yet as to what sparked the shutterbug smackdown, but Culkin seemed irked by the constant cameras when he arrived at the Budget Ibis Hotel earlier in the day.
Mila Kunis' ex wore sunglasses, a beige jacket and covered his face with a scarf, and he was rocking colorful nail polish in a variety of different shades.
Macaulay seemed to be displaying a healthier appearance as of late.
Then again, the latest incident surely won't help his rocky reputation. Culkin's rep had no comment.