When Jason Leslie of Marlboro saw a photo online with a measuring stick and a Subway Footlong sandwich, he decided to conduct his own experiment.

Leslie ventured to a local Subway restaurant and found he was getting less than the advertised 12 inch sandwich. In fact, five percent less.

According to The Asbury Park Press, Leslie filed a class action suit on Wednesday in U.S. District Court in New Jersey with his lawyer Gerald A. Marks of Marks & Klein in Red Bank.

Leslie told The New York Post that he's eaten 50 Subway sandwiches per year for 14 years.  

“The sandwiches are anywhere between a half-inch to an inch shorter . . . I feel cheated," he told the NY newspaper.

According to the APP, Leslie has bought the now infamous $5 Footlong Subway sandwiches in stores around Monmouth and Middlesex Counties, including Howell, Freehold and Marlboro.

Subway made $11.4 billion in 2011, according to the Quick Service Restaurant Trade Journal. It has not been reported how much Leslie is seeking from the class-action suit.

A statement released by Subway said, “We have redoubled our efforts to ensure consistency and correct length in every sandwich we serve. Our commitment remains steadfast to ensure that every Subway Footlong sandwich is 12 inches.”

Leslie told The New York Post he felt "like an idiot" for falling for the footlong advertisement.

“They advertise in all these commercials, ‘Footlong, Footlong, Footlong,’ and now I feel like an idiot. I can’t believe I fell for that trick."