He sounds like he means business!

Brody Jenner hit up Life & Style Weekly's 10 year anniversary party at the Mondrian hotel in West Hollywood last night, and the reality star had some stern warnings for the photographers as he made his way inside.

"Stop f**king with my pops," he told them, in reference to his dad Bruce Jenner, who has been making headlines recently for allegedly transitioning into a woman. The former Hills star also got defensive when a photographer asked about his little sister Kylie's rumored relationship with rapper Tyga.

"Are you really asking me this? Don't you know me by now? I don't give a f**k about any of this, as long as nobody f**ks with my little sister, that's all I care about," he fumed.

The Prince of Malibu is pissed!