David Dobrik is up to his old prankster ways. But these pranks aren’t funny, they’re hurtful.

The YouTuber uploaded a video of him and his assistant to his TikTok account on Friday.

Dobrik and Natalie are trying to toss markers into a glass from a distance.

The YouTuber was the first to toss a pink marker into the water glass and says, “If I make this you have to work free for a week.”

He misses and Natalie is up next.

Natalie was next and said, “If I make this David can’t see the new Spider Man movie when it comes out.”

Before the marker leaves her hand, Dobrik comes up from behind and slaps the marker into Natalie’s face.

Natalie sits up and tells Dobrik, “It’s not that serious you f***ing psycho.”

The video then cuts to a close-up of Natalie’s face and she has a big bloody gash on her forehead right by her eyebrow.