— You may have the right to remain silent, but it doesn't help much if no one's told your butt.

Police say that on July 5, they got a call from a cell phone in Florham Park. The caller could be heard in the background, discussing using marijuana, police said.

So Officers Brian Mensing and Kevin Langereis responded to the address, knocked on a door and heard a man they later identified as Andrew Macfarlane say "the cops are here," according to police.

They also saw Macfarlane, 22, pick items up off a table and walk toward the rear of the home, police said.

The officers kept knocking on the door, and Macfarlane came to the door, and let the officers come in, police said.

Macfarlane told the officers he had "butt dialed" 911 by mistake, police said.

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The officers saw what they suspected to be marijuana residue on the table, police said. They investigated further and found the items removed from the table — a small, clear bag of suspected marijuana, a marijuana grinder, and a pipe commonly used for marijuana — police said.

Macfarlane was transported to police headquarters and charged with possession of under 50 grams of mariajana and possession of drug paraphernalia, police said.