Who’s a vulgar boy?

A new gadget helps pet pooches express their inner junkyard dog by spewing swear words from a speaker on their collar while they bark.

The battery-powered “CussCollar” is programed to blurt out prerecorded profanities, such as “bullsh–t!,” “motherf—er!” and “f–k!” with every woof-woof, according to MSCHF, the company behind the gag gift.

And it may help pups vent about their ruff day.

“We all know your pooch probably has some built-up rage for those times that you didn’t come home [or] skimped pretty hard on his dinner that one night,” a write-up on odditymall.com reads. “Just let them curse their frustration away!”

The $60 leather collar is made with a device that detects a dog’s bark then randomly selects a curse word to spout. It comes with a padded interior strap and steel buckle.

“We actually have a dog collar that lets you know what your dog is really saying,” a video from the company website states.