An Oregon couple out to dinner at a charming resort town steakhouse got themselves arrested last week for trying to tip their waitress with an envelope full of crystal meth.

Ryan Bensen, 40, and Erica Manley, 37, were out to a nice, romantic dinner at the Twisted Fish Steakhouse — "Coastal dining at its freshest" — late Thursday night, when it came time to pay the bill.

The power couple paid with a gift card, but apparently wanted to leave their waitress something to remember them by: an envelope, marked with a question mark, full of crystal meth.

"She was like 'Whoa — what the …?'" Twisted Fish's manager told the Oregonian. "We're not a little dive bar or hole in the wall. We're a classy place."

The waitress promptly called 911.

"I think the waitress was stunned and probably offended that somebody would think she was a user of a methamphetamine," Seaside's Police Chief later told the Daily News.

Bensen and Manley were still at the restaurant when police arrived. After arresting them, police found an additional 17 ounces of meth in Manley's purse.

But that wasn't all. Seaside police obtained a search warrant and discovered the couple had been running a meth lab in their nearby Holiday Inn hotel room.

They're both being held on charges of possessing and manufacturing methamphetamines.

[h/t the Oregonian]