Hey, not all of us can afford a Batplane.

Over the past year, the Transportation Security Administration (TSA) has been waging a war against passengers who pack Batmans bat-shaped boomerangs, or batarangs, in their carry-on luggage.

The most recent infraction occurred just last week in San Francisco, when a passenger attempted to bring three of the fictional throwing weapons through security, just in case Mr. Freeze decides to get cute 30,000 feet in the air.

Passengers are not allowed to bring anything on a plane that resembles a weapon, a TSA spokesperson told The Hollywood Reporter . Anything like a boomerang or anything like that would not be permitted in the airplane cabin.

Luckily, the TSAs Instagram account (follow, follow, follow) has documented every time someone has tried to sneak the bat-ccessory on board in an increasingly futile attempt to let everybody know that batarangs are a no-go.

Batarangs are becoming more and more common and its important that you know theyre prohibited in carry-on bags, a post from January reads. They can be placed in your checked baggage along with your grapple gun, bat-saw, collapsible bat-sword, and other utility belt items.

Take a look at the handiwork of Batman fans below and remember theyre for CHECKED LUGGAGE ONLY, OK?